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XID Services

1225 Weeds

Of The 48 States & Adjacent Canada

An Interactive Identification Guide for Windows

over 6,200 color photos of all 1,225 species
fully illustrated glossary of botanical terminology
the largest Weed Identification reference ever produced for North America
county level distribution maps
page references to over 50 of the most commonly used weed reference books
up-to-date nomenclature and synonymy

more...

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Species

The complete list of species found in the 1,225 Weeds database can be found here. These species are found in at least one of the over 50 weed identification books referenced by the Weeds database (page numbers in these books are cited in the program).

Interactive Plant Identification

Flora ID Northwest – Illustrated XID interactive plant identification databases for All The Native and Naturalized Plants in Washington, Oregon, California, Idaho, Nevada, Utah, Wyoming, Montana, Colorado, North Dakota, South Dakota, Nebraska, Kansas, Minnesota, Wisconsin, Iowa, Arizona, and New Mexico as well as the Canadian provinces of British Columbia, Alberta, Saskatchewan, and Manitoba.

Gallery

The 1,225 Weeds database contains over 6,200 photos. Over 22,000 images can be found in the Gallery. Photos are available for licensing...

Features

The largest Weed Identification reference ever produced for North America.

System requirements: Windows 95 through Windows 10, 1.6GB storage to install (will also run from the USB drive)

Gallery: all remaining species can be viewed simultaneously for comparison. The user can determine the number and size of images to be displayed
Species List Report: the images, data, and references for all remaining species can be scrolled for comparison
Printed Reports: all aspects of the program including species lists, images, menu structure, data etc… are printable
Analysis: Provides the user with a dynamic list of the most efficient menus for the identification process based on steps taken thus far, ease of use, and items remaining in the database
View Data Set: Shows all of the data for any selected species in the database
Show Data Distribution: Shows the relative frequency of characteristics within the database
Descriptive Item Text Fields: Author defined help text for each species
Item Graphics: color photos are incorporated for each species in the database
Context Specific Help Screens: Author defined help text for each characteristic and menu
Characteristic Graphics: Photos or line drawings can be incorporated for each characteristic or menu
List Unusual Characteristic: Shows the most unusual characteristics of any item (compared to those remaining) in descending order
Triggered Pop-Up Taxa: Family, genus, and species are recognized and displayed in scientific databases
Sequential User Reinforcement: The user is shown the number of remaining items after each step
Directed to Page Numbers in Multiple References of Authors Choice: The author can reference the page number in up to 50 references.

Please take the time to view the YouTube tutorial below to see all the features of the software. The tutorial is the same for the DVD and flashdrive versions (you just get more species on the flashdrive).

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There are 16 modules to the tutorial, so it takes about 45 minutes to see all the features of the software.

XID Authoring System

The XID Authoring System allows authors to create their own “smart key” or random access expert system for the identification of any group of species, individuals, or objects, i.e., plants, animals, cars, criminals, etc. The system consists of multi-layered menus in which any attribute can be prioritized and described. The elegant simplicity of the XID System makes it extremely user friendly. It is as useful for the junior high school teacher as for the professional scientist.

As well as creating state-of-the-art identification systems for professional scientists, the XID System provides an excellent vehicle by which to teach classification, taxonomy, logic, and problem solving skills. The authoring system allows students to be involved in the entire process, including selection of subject matter, determination of characters and character states (i.e., color {red, blue, green}), gathering and compiling the data, data entry, error checking, and data correction. Their efforts are strongly reinforced by the final use of the program for the identification of the selected subject matter.

Unlike many of the larger and more cumbersome systems such as DELTA and MEKA, the XID System utilizes state-of-the-art technology. This allows for extreme user friendliness for both the author and end user of the database, as well as maximizing the speed and efficiency of data storage and manipulation. This is why the XID System was chosen by Flora ID Northwest to create the largest comprehensive interactive plant identification database in the world, currently encompassing the entire flora of eighteen states and four Canadian provinces

Characteristic terminology and database items may be graphically represented using line drawings or color photos. In addition, unlike a dichotomous key, which requires a rigid set of steps, the XID System allows the user to randomly select characteristics that are consistent with their specimen and skill level. If the user cannot decide upon a characteristic, they may query the program, which will provide a list of suggestions in order of ease of use and effectiveness, interactively customized to the items remaining.

Applications in which the XID System is being used include the identification of weeds, insects, poisonous plant symptomatology, fishes, rocks and minerals, diseases, gastrotrichs, etc. The XID System can also be used in applications as diverse as assigning health care benefits, personnel selection, research plot evaluation, or any other application where a relational database is required.

As well as the Authoring System, XID Services also markets the weed identification databases created by co-founder Dr. Richard Old, weed identification specialist for Cooperative Extension Service at Washington State University since 1976.

Following are three examples of attempting to identify a dandelion (Taraxacum officinale) from a database of 1,069 species, using sets of three characteristics chosen by different students. Following the examples generated by the three students is an example of using the “analysis” function alone to accomplish the identification. The most efficient method of identification is to first select a few obvious characteristics (as the students have done) and then use the “analysis” function to complete the process. As soon as the database is reduced to a relatively small number of remaining species, the images of these species can be scrolled or displayed simultaneously for comparison.

Student #1
Characteristic Chosen Flower Color: Yellow # of Petals: >10* Flower Width: 1.4 inches*	# of Species Remaining 433 135 38
Student #2
Characteristic Chosen Stem Cross Section: Hollow Juice: Milky Flowering Stem: Leafless	# of Species Remaining 109 16 5
Student #3
Characteristic Chosen Leaf Length: 4 - 8 inches Leaf Arrangement: All Basal Leaf Margin: Lobed	# of Species Remaining 533 57 12
Analysis
Characteristic Chosen Flower Color: Yellow Leaf Width: 0.8 – 1.6 inches # of Petals: >10* Root: Taproot Flower Width: 1.4 inches* Seed Windblown: Yes Juice: Milky Flowering Stem: Leafless Flowering Stem: Unbranched	# of Species Remaining 433 241 75 **50 24 13 7 2 Identified: Dandelion

* Not technically correct but often interpreted in this manner so the data reflects both possible interpretations.

** The message “Family Identified: Asteraceae” appears on the screen at this point.

Note: Although many very technical characteristics are available in the program, those chosen by the analysis function are very similar to those chosen by the students. This is due to two factors: (1) the characteristics chosen by the analysis function are weighted for ease of use, and (2) this function does not mandate a selection, but instead, presents a list of the remaining characteristics in order of effectiveness.

Order

1225 Weeds of the 48 States & Adjacent Canada. On flashdrive

An Interactive Identification Guide

Cost: $49.95
Shipping: $5.00

over 6,200 color photos of all 1,225 species
fully illustrated glossary of botanical terminology
county level distribution maps
page references to over 50 of the most commonly used weed reference books
up-to-date nomenclature and synonymy

More product details.

System requirements: Windows 95 through Windows 10, 1.6 gigabytes to install (will also run from the USB drive)

By using the PayPal “Buy Now” button below, your credit card payment will be processed by PayPal’s secure processing system, or you can pay using funds in your PayPal account. There is no charge to use the PayPal service and you do not need to have or create a PayPal account to use this service. If you do not have a PayPal account: After clicking the “Buy Now” button below, select the box where it says “Pay with a Debit or Credit Card.”

If you wish to order site licenses, photo licensing, the XID Authoring System, pay an existing invoice, or place an order using a purchase order number, please contact sales@xidservices.com. We are happy to ship your order with an invoice if you do not wish to use PayPal.

If you have any questions, phone 1-509-332-2989 or email: info@xidservices.com

References

Upon selection or identification of a species, the weed identification database references the page number where the species images/description appear in any of the following weed identification reference books. The purpose of the program is not to replace your existing reference books, but to make them more easily accessible. Where ever possible the ISBN number is given to facilitate in finding the book (in case the user wants to add the book to their library).

An Illustrated Guide To Arizona Weeds, 1972 (ISBN 0-8165-0288-9)
Aquatic and Riparian Weeds for the West, 2003 (ISBN 1-879906-59-7)
California Growers Weed Identification Handbook, 1968 – 1998 University of California Publication # 4030-1
Common Weeds of Canada, Mulligan 1987 (ISBN 0-910053-59-9)
Common Weeds of the Canadian Prairies, 1963 (Cat# A53-1136-1)
Common Weeds of the United States, 1971 (ISBN 0-486-20504-5)
Common Weed Seedlings of the North Central States, 2001 North Central Regional Extension Publication # 607
Common Weed Seedlings of the United States and Canada, 1978 Coop Ext. Univ. of Georgia, Athens
Field Guide To The Common Weeds Of Kansas, 1983 (ISBN 0-7006-0233-X)
Fifty Important Weeds of Montana, Montana Ag. Ext. Service, 1920.
Garden Weeds of Southern California, 1981
Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0)
How to Know the Weeds, 1972, (ISBN# 0-697-04880-2)
Identification Guide to the Weeds of Quebec, 1999 (ISBN# 2-89457-174-7)
Identifying Seedling and Mature Weeds (Southeastern US) 1980 North Carolina Agricultural Research Service, Bulletin #461
Manual of Ohio Weeds, 1931 Ohio Ag. Exp. Station Bull. # 475
Nebraska Weeds, 1979 Nebraska Dept. of Ag., Lincoln NE
Nonnative Invasive Plants of Southern Forests 2003, USFS, SRS 62
Northwest Weeds, 1990 (ISBN 0-87842-249-8)
Ontario Weeds, 1992 Agdex 640, Publication #505
Pennsylvania Field Guide, Common Invasive Plants in Riparian Areas, 2004
Representative Missouri Weeds and Their Control, 1941 Univ. of Missouri Ag. Exp Station Bulletin #433
Selected Weeds of Oregon, 1985 and 1989 Supplement (s) Oregon State Dept. of Agriculture
Some Important Michigan Weeds, 1951 Mich. Ag. Exp. Station Bulletin #304
Some Weedy Plants of North Carolina, 1955 North Carolina Ag. Ext. Circular # 390
South Dakota Weeds, 1967 South Dakota State University
South Dakota Weeds 2002 South Dakota Dept. of Ag. 523 E. Capitol, Foss Bldg. Pierre, South Dakota 57501
S.W.S.S. Weed ID Guide, 1993
Weed Seeds of the Great Plains, 1993 University of Kansas# 92-125-B ISBN# 0-7006-0651-3
Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8
Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2
Weeds, 1957 Illinois State Dept. of Ag.
Weeds and Poisonous Plants of Wyoming and Utah 1987 (ISBN 0-941570-06-1)
Weeds of Alberta, 1983 Alberta Environmental Centre Agdex 640-4
Weeds of Arkansas 1981 (MP 169-5M-3-81)
Weeds of California, 1970, State of California Publications and Documents.
Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3)
Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948
Weeds of Colorado, 1990 Cooperative Extension, Colorado State Univ. Bulletin 521A
Weeds of Crops in Southern Arizona, 1958 Arizona Ag. Exp. Station Bulletin #296
Weeds of Eastern Washington and Adjacent Areas, 1972 (LOC 72-83635)
Weeds of Kentucky and Adjacent States, 1991 (ISBN 0-8131-1743-7)
Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4)
Weeds of New Jersey, 1929 New Jersey Ag. Exp. Station Circular #219
Weeds of Nova Scotia, 1986 (ISBN# 0-88871-063)
Weeds of Southern Turfgrasses, 1992 Univ. of Florida, Gainesville Publication # SP-79
Weeds of the North Central States, 1981 Univ. of Illinois, Urbana – Champaign Bulletin # 772
Weeds of the Northeast, 1956, Univ. of Delaware Field Manual #1
Weeds of the Northeast, 1997 Cornell University ISBN# 0-8014-8334-4
Weeds of the Northern United States and Canada, 1964 Montgomery
Weeds of the Northern U.S, and Canada, 1999 Royer and Dickinson, (ISBN# 1-55105-221-0)
Weeds of the Prairies, 2000 Alberta Food and Agriculture ISBN# 0-7732-6147-8
Weeds of the Southern United States, 1975, North Carolina Ag. Extension Circular #599
Weeds of the United States and Their Control, Lorenzi 1987, ISBN# 0-442-25884-4
Weeds of the West, 1992 (ISBN 0941570-13-4)
Weeds of the West, 2000 (ISBN 0941570-13-4)
Weeds of Utah, 1971 UAES Special Report 21
Wildly Successful Plants, A Handbook of North American Weeds, 1977 (ISBN# 0-02-528850-4)

Gallery

Using the Gallery

Scientific names are often in flux, and each species is listed only by one scientific name. The XID program allows the users to look up species under either current or obsolete names, but the list shown here gives only one name per species. If you are interested in whether a certain species is contained in the database but can not find its name on this list, it may be because the name has changed. Feel free to contact: info@xidservices.com if you have any questions about whether a certain species appears in the database.

Species are arranged alphabetically by scientific name. Common names have been added to most species, and are searchable as well. Since some scientific names have changed (and will continue to do so), recent synonyms have been added to some species and can be found using “Search” . For example, looking in the alpha listings for Lotus purshianus will yield no results, but a search for Lotus purshianus (or a search for “deer vetch”), will locate the species under its new name: Acmispon americanus.

The gallery contains over 22,000 images of plants in 156 families. Over 99% of these are photos I (about me) have taken over the years. Some species have only one image, others have dozens. There are even a few organisms that are not vascular plants, that I have received questions about for identification. All images are copyrighted and may only be re-used with permission*. Most images are available for commercial use at a resolution of 1,200 X 1,600 or higher, please call 509 332 2989 or Email Me for rates and details. Most images are of “weeds” and poisonous plants, as that is my particular area of interest, but there are a smattering of “wildflowers” and horticultural plants as well, so don’t leap to any assumptions. If you are interested in plants other than weeds, be sure to check out the interactive, fully illustrated keys by Flora ID covering all native and naturalized flora in eighteen western states and four Canadian provinces!

Since my particular field of expertise (and the function of the XID software) is plant identification, most photos focus on diagnostic features for ID, rather than any attempt at aesthetically pleasing photographic qualities.

I welcome all comments, corrections, suggestions, etc. Please Email Me

* There are a few images taken by other photographers that were loaned and are public domain, those images will have the name of the photographer included in the image file name or embedded in the photo. A special thanks to Dr. Joe DiTomaso, author of Weeds of California and Other Western States, an outstanding reference work!

Abelmoschus esculentus

Okra Malvaceae > The mallow family.

Abronia latifolia

yellow sandverbena Nyctaginaceae > The four-o’clock family.

Abronia mellifera

White sand verbena Nyctaginaceae > The four-o’clock family.

Abrus precatorius

Rosary-pea, rosary-bean, prayer-bean. Fabaceae = Leguminosae > The pea family. These highly toxic seeds were used as the beads in rosaries. The specific epithet "precatorius" means "to pray". Interestingly this is also the root word for "precarious," a situation in which one must pray for their well-being!

Abutilon theophrasti

Velvetleaf, China jute, butterprint, buttonweed jute, china mallow, Indian velvetleaf Malvaceae > The mallow family.

Acalypha gracilens

Slender copperleaf, slender threeseed mercury Euphorbiaceae > The spurge family.

Acalypha ostryifolia

Rough-pod copperleaf, hophornbeam copperleaf, pineland threeseed mercury Euphorbiaceae > The spurge family.

Acalypha rhomboidea

Common threeseed mercury Euphorbiaceae > The spurge family.

Acanthospermum australe

bristly star bur, bristly star-bur, bristly starbur, bristly starburr, goathead, goat's head, goat's-head, hispid starrburr, slingshot weed, star burr, starbur, starburr, Texas cockspur, upright star burr, upright starbur Asteraceae = Compositae > The sunflower family.

Acanthus spinosus

Bear's breeches Acanthaceae > The Acanthus family.

Acer circinatum

Vine maple Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Acer douglasii

Douglas maple, Rocky Mountain maple, mountain maple = Acer glabrum Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Acer macrophyllum

Big-leaf maple Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Acer negundo

Box elder, black maple Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Acer platanoides

Norway maple Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Acer rubrum

Red maple Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Acer saccharinum

Silver maple Sapindaceae > The soapberry family (Acer formerly in the Aceraceae).

Achillea millefolium

Yarrow = Achillea lanulosa Asteraceae = Compositae > The sunflower family.

Achillea ptarmica

Sneezewort, sneezeweed Asteraceae = Compositae > The sunflower family.

Acinos arvensis

Basil-thyme = Clinopodium acinos Lamiaceae = Labiatae > The mint family.

Acmispon americanus

American deerweed, deervetch, deer vetch = Lotus purshianus, Lotus unifoliatus Fabaceae = Leguminosae > The pea family.

Aconitum columbianum

Monk's-hood Ranunculaceae > The buttercup family.

Acorus calamus

Sweetflag, calamus, beewort, bitter pepper-root, calamus-root, flag-root, gladdon, myrtle-flag, myrtle-grass, myrtle-root, myrtle-sedge, pine-root, rat-root, sea-sedge, sweet-cane, sweet-cinnamon, sweet-grass, sweet-myrtle, sweet-root, sweet-rush, sweet-sedge Acoraceae > The sweetflag family. Formerly in the Araceae.

Actaea rubra

Red baneberry, cohosh, red cohosh, necklaceweed, snakeberry, poison de couleuvre Ranunculaceae > The buttercup family.

Adenocaulon bicolor

Trail-plant, American trail-plant Asteraceae = Compositae > The sunflower family.

Adonis aestivalis

Pheasant's-eye, summer pheasant's-eye Ranunculaceae > The buttercup family.

Aegilops cylindrica

Jointed goatgrass, goatgrass, Poaceae = Gramineae > The grass family.

Aegilops neglecta

Three-awn goatgrass Poaceae = Gramineae > The grass family.

Aegilops triuncialis

Barbed goatgrass Poaceae = Gramineae > The grass family.

Aegopodium podagraria

Goutweed, Bishop's weed Apiaceae = Umbelliferae > The parsley family.

Aeschynemone indica

budda pea, curly indigo, hard sola, Indian jointvetch, kat sola, northern jointvetch, sensitive jointvetch, sensitive vetch Fabaceae = Leguminosae > The pea family.

Aesculus parviflora

Bottlebrush buckeye Fabaceae = Leguminosae > The pea family.

Agastache foeniculum

Anise hyssop, blue giant-hyssop Lamiaceae = Labiatae > The mint family.

Agastache urticifolia

Nettle-leaf giant hyssop, horse nettle, horse mint Lamiaceae = Labiatae > The mint family.

Ageratina altissima

Snakeroot, white snakeroot Asteraceae = Compositae > The sunflower family.

Agoseris aurantiaca

Orange agoseris, orange mountain-dandelion Asteraceae = Compositae > The sunflower family.

Agoseris compared_with_tragopogon

The smaller heads with the bright white pappus are Agoseris, the larger head with the grayish pappus is Tragopogon. Interestingly, the botanical term for this grayish colored pappus is "sordid", usually used to mean "dirty" in a different context! Dandelion (Taraxacum) has similarly grayish pappus.

Agoseris glauca

Pale agoseris, prairie agoseris, short-beaked agoseris, pale goat-chicory Asteraceae = Compositae > The sunflower family.

Agoseris grandiflora

Mountain dandelion, large-flower goat-chicory, large-flowered agoseris Asteraceae = Compositae > The sunflower family.

Agrimonia pilosa

Hairy agrimony, immortal crane herb Rosaceae > The rose family.

Agropyron cristatum

Crested wheatgrass = Agropyron desertorum Poaceae = Gramineae > The grass family.

Agrostemma githago

Corncockle, common corncockle Caryophyllaceae > The chickweed family.

Agrostis capillaris

Slender bentgrass Poaceae = Gramineae > The grass family.

Agrostis exarata

Spike bentgrass Poaceae = Gramineae > The grass family.

Agrostis gigantea

Redtop, black bentgrass, black bent Poaceae = Gramineae > The grass family.

Ailanthus altissima

Tree-of-heaven Simaroubaceae > The quassia-wood family.

Aira caryophylla

Silver hairgrass, common silver hairgrass Poaceae = Gramineae > The grass family.

Ajuga reptans

Bugle, common bugleweed, bugleweed, carpet bugleweed, carpetweed, carpet bugle Lamiaceae = Labiatae > The mint family.

Akebia quinata

Chocolate vine Lardizabalaceae > The lardizabala family.

Albizia julibrissin

Mimosa, silk tree, silky acacia Fabaceae = Leguminosae > The pea family.

Alhagi maurorum

Camelthorn = Alhagi pseudalhagi, Alhagi camelorum Fabaceae = Leguminosae > The pea family.

Alisma triviale

Water plantain, northern water plantain Alismataceae > The water-plantain family.

Alliaria Compared to Lunaria

Comparison of the leaves of Alliaria petiolata and Lunaria annua. Both Brassicaceae = Cruciferae > The mustard family.

Alliaria petiolata

Garlic mustard Brassicaceae = Cruciferae > The mustard family.

Allium sativum

Cultivated garlic Alliaceae > The onion family. Formerly in the Liliaceae.

Allium vineale

Wild garlic, field garlic, crow garlic, false garlic Alliaceae > The onion family. Formerly in the Liliaceae.

Alloteropsis cimmicina

Bugseed-grass Poaceae = Gramineae > The grass family.

Alnus rubra

Red alder Betulaceae > The birch family.

Alopecurus arundinaceus

Garrison creeping foxtail, creeping foxtail Poaceae = Gramineae > The grass family.

Alopecurus geniculatus

Water foxtail, marsh meadow-foxtail, marsh foxtail Poaceae = Gramineae > The grass family.

Alopecurus myosuroides

Black-grass, black twitch, slender foxtail Poaceae = Gramineae > The grass family.

Alopecurus pratensis

Meadow foxtail Poaceae = Gramineae > The grass family.

Alternanthera philoxeroides

Alligatorweed = Achyranthes philoxeroides Amaranthaceae > The amaranth family.

Alternanthera pungens

Khakiweed = Alternanthera repens, Achyranthes repens Amaranthaceae > The amaranth family.

Alternanthera sessilis

Sessile joyweed,dwarf copperleaf = Achyranthes sessilis, Alternanthera glabra, Gomphrena sessilis Amaranthaceae > The amaranth family.

Althaea rosea

Hollyhock = Alcea rosea Malvaceae > The mallow family.

Alyssum alyssoides

Pale madwort, yellow alyssum Brassicaceae = Cruciferae > The mustard family.

Alyssum desertorum

Desert madwort, desert alyssum Brassicaceae = Cruciferae > The mustard family.

Amaranthus albus

Tumble pigweed Amaranthaceae > The amaranth family.

Amaranthus australis

Southern amaranth Amaranthaceae > The amaranth family.

Amaranthus blitoides

Prostrate pigweed = Amaranthus graecizans Amaranthaceae > The amaranth family.

Amaranthus deflexus

Large-fruit amaranth, low amaranth, Argentina amaranth, perennial pigweed Photos provided by Dr. Joe DiTomaso, author of Weeds of California and Other Western States. Amaranthaceae > The amaranth family.

Amaranthus hybridus

Smooth pigweed, red amaranth, smooth amaranth, green amaranth, slim amaranth Amaranthaceae > The amaranth family.

Amaranthus palmeri

Carelessweed, Palmer amaranth, Palmer pigweed Amaranthaceae > The amaranth family.

Amaranthus powelii

Powell amaranth, Powell pigweed

Amaranthus retroflexus

Redroot pigweed Amaranthaceae > The amaranth family.

Amaranthus spinosus

Spiny amaranth, spiny pigweed Amaranthaceae > The amaranth family.

Amaranthus tuberculatus

Tall waterhemp, roughfruit amaranth Amaranthaceae > The amaranth family.

Amaranthus viridis

Slender amaranth, green amaranth Amaranthaceae > The amaranth family.

Ambrosia acanthicarpa

Spiny bursage Asteraceae = Compositae > The sunflower family.

Ambrosia artemisiifolia

Common ragweed Asteraceae = Compositae > The sunflower family.

Ambrosia chamissonis

Silver bur-ragweed, silver beachweed, silver beachbur, beachbur Asteraceae = Compositae > The sunflower family.

Ambrosia grayi

Woolyleaf bur-ragweed = Franseria tomentosa Asteraceae = Compositae > The sunflower family.

Ambrosia psilostachya

Cuman ragweed, perennial ragweed, western ragweed Asteraceae = Compositae > The sunflower family.

Ambrosia trifida

Giant ragweed, great ragweed, tall ragweed Asteraceae = Compositae > The sunflower family.

Amelanchier alnifolia

Serviceberry, sarviceberry, Juneberry, saskatoon Rosaceae > The rose family.

Ammannia coccinea

Valley redstem, scarlet toothcup, purple ammannia = Ammannia teres Lythraceae > The loosestrife family.

Ammi majus

Bishop's-weed, large bullwort, Bishop's-flower, Queen Anne's Lace (also applied to Daucus carota) Apiaceae = Umbelliferae > The parsley family.

Ammophila arenaria

European beachgrass Poaceae = Gramineae > The grass family.

Amorpha fruticosa

Bastard indigo, false indigo, false indigobush Fabaceae = Leguminosae > The pea family.

Ampelopsis arborea

Peppervine, buckvine, cow-itch Vitaceae > The grape family.

Amphiachyris dracunculoides

Broomweed, prairie broomweed = Xanthocephalum draunculoides, Gutierrezia draunculoides Asteraceae = Compositae > The sunflower family.

Amsinckia lycopsoides

Fiddleneck tarweed, bugloss fiddleneck Boraginaceae > The borage family.

Amsinckia menziesii

Menzie's fiddleneck, rancher's fiddleneck, common fiddleneck, rancher's fireweed = Amsinckia retrorsa Boraginaceae > The borage family.

Amsinckia sp.

Fiddleneck tarweed Boraginaceae > The borage family.

Amsinckia tessellata

Bristly fiddleneck, devil's lettuce Boraginaceae > The borage family.

Anagallis arvensis

Scarlet pimpernel = Lysimachia arvensis Primulaceae > The primrose family.

Anaphalis margaritacea

Pearly everlasting Asteraceae = Compositae > The sunflower family.

Anchusa arvensis

Annual bugloss = Lycopsis arvensis Boraginaceae > The borage family.

Anchusa azurea

Italian bugloss Boraginaceae > The borage family.

Anchusa officinalis

Alkanet, common bugloss Boraginaceae > The borage family.

Andropogon bladhii

Caucasian bluestem = Bothriochloa bladhi Poaceae = Gramineae > The grass family.

Andropogon glomeratus

Bushy bluestem, bushy beardgrass Poaceae = Gramineae > The grass family.

Andropogon saccharoides

Silver beardgrass = Bothriochloa laguroides ssp. torreyana Poaceae = Gramineae > The grass family.

Andropogon virginicus

Broom-sedge Poaceae = Gramineae > The grass family.

Androsace septentrionalis

Pygmyflower rockjasmine Primulaceae > The primrose family.

Anemone berlandieri

tenpetal thimbleweed Ranunculaceae > The buttercup family.

Anemone piperi

Piper’s-anemone, windflower A native wildflower of the forest understory. Ranunculaceae > The buttercup family.

Anethum graveolens

Dill, dillweed Apiaceae = Umbelliferae > The parsley family.

Anthemis austriaca

Austrian mayweed Asteraceae = Compositae > The sunflower family. Only known population in North America, Whitman County WA

Anthemis cotula

Stinking mayweed, stinking chamomile, dogfennel (also applied to Eupatorium capillifolium) Asteraceae = Compositae > The sunflower family.

Anthemis tinctoria

Golden chamomile, golden marguerite, yellow chamomile, oxeye chamomile = Cota tinctoria Asteraceae = Compositae > The sunflower family.

Anthoxanthum odoratum

This species is not part of the Interactive Identification Guide.

Sweet vernalgrass Poaceae = Gramineae > The grass family.

photo of Anthoxanthum odoratum — Anthoxanthum odoratum: Most images are available for commercial use.

Anthriscus caucalis

burr-chervil, burchervil, bur-chervil, bur-beak chervil = Anthriscus scandicina Apiaceae = Umbelliferae > The parsley family.

Anthriscus sylvestris

Wild chervil, cow parsley, wild beaked-parsley Apiaceae = Umbelliferae > The parsley family.

Antirrhinum majus

Snapdragon, large snapdragon, common snapdragon Scrophulariaceae > The snapdragon family.

Apera interupta

Hairgrass, interrupted hairgrass, dense silky-bent Poaceae = Gramineae > The grass family.

Apocynum androsaemifolium

Creeping dogbane Apocynaceae > The dogbane family.

Apocynum cannabinum

Hemp dogbane Apocynaceae > The dogbane family.

Aptenia cordifolia

Heartleaf iceplant, baby sunrose Photos provided by Dr. Joe DiTomaso, author of Weeds of California and Other Western States. Aizoaceae > The ice-plant family.

Arabidopsis thaliana

Thale cress, mouse-ear cress. Sometimes referred to as "the E. coli of the plant world" due to its use in genetic experiments. Brassicaceae = Cruciferae > The mustard family.

Arabis glabra

Tower mustard Brassicaceae = Cruciferae > The mustard family.

Arachis prostrata

Grassnut Fabaceae = Leguminosae > The pea family.

Arceuthobium divaricatum

Pinyon dwarf mistletoe Santalaceae > The sandalwood family. Formerly in the Viscaceae

Arctium lappa

Greater burdock Asteraceae = Compositae > The sunflower family.

Arctium minus

Lesser burdock, common burdock Asteraceae = Compositae > The sunflower family.

Arctium tomentosum

Wooly burdock Asteraceae = Compositae > The sunflower family.

Arctostaphyllos uva-ursi

Bearberry, kinnikinnick Ericaceae > The heath family.

Ardisia crenata

Coralberry, spice berry, scratchthroat Primulaceae > The primrose family.

Arenaria serpyllifolia

Thymeleaf sandwort Caryophyllaceae > The chickweed family.

Argemone albiflora

Bluestem pricklypoppy Papaveraceae > The poppy family.

Argemone mexicana

Mexican poppy, Mexican pricklypoppy Papaveraceae > The poppy family.

Argemone polyanthemos

White pricklypoppy Papaveraceae > The poppy family.

Aristida purpurea

Purple threeawn Poaceae = Gramineae > The grass family.

Aristolochia macrophylla

Dutchman's pipe, pipevine Aristolocaceae > The birthwort family.

Armoracia rusticana

Horse-radish Brassicaceae = Cruciferae > The mustard family.

Arrhenatherum elatius

Tall oatgrass Poaceae = Gramineae > The grass family.

Artemisia absinthium

Absinth, absinth wormwood Asteraceae = Compositae > The sunflower family.

Artemisia annua

Annual wormwood Asteraceae = Compositae > The sunflower family.

Artemisia biennis

Biennial wormwood Asteraceae = Compositae > The sunflower family.

Artemisia campestris

Prairie sagewort, Pacific wormwood, field sagewort Asteraceae = Compositae > The sunflower family.

Artemisia camphorata

Camphor southernwood, southern wormwood Asteraceae = Compositae > The sunflower family.

Artemisia dracunculus

Russian tarragon, dragon sagewort Asteraceae = Compositae > The sunflower family.

Artemisia filifolia

Sand sagebrush, sand sage, sandhill sage Asteraceae = Compositae > The sunflower family.

Artemisia frigida

This species is not part of the Interactive Identification Guide.

Fringed sagebrush, prairie sagewort Asteraceae = Compositae > The sunflower family.

photo of Artemisia frigida — Artemisia frigida: Most images are available for commercial use.

Artemisia ludoviciana

Prairie sage, Louisiana sage, white sagebrush Asteraceae = Compositae > The sunflower family.

Artemisia pontica

Roman wormwood Asteraceae = Compositae > The sunflower family.

Artemisia suksdorfii

Coastal mugwort, coastal wormwood, Suksdorf sagewort Asteraceae = Compositae > The sunflower family.

Artemisia tridentata

Big sagebrush Asteraceae = Compositae > The sunflower family.

Artemisia vulgaris

Mugwort Asteraceae = Compositae > The sunflower family.

Arthraxon hispidum

Hairy jointgrass, small carpgrass Poaceae = Gramineae > The grass family.

Aruncus sylvester

Goat's-beard, eastern goat's-beard, bride’s-feathers = Aruncus dioicus var. vulgaris Rosaceae > The rose family.

Asclepias curassavica

Tropical milkweed, scarlet milkweed, swallow wort, Indian root Asclepiadaceae > The milkweed family.

Asclepias engelmanniana

Engelmann's milkweed Asclepiadaceae > The milkweed family.

Asclepias fascicularis

Narrowleaf milkweed, Mexican whorled milkweed Asclepiadaceae > The milkweed family.

Asclepias humistrata

Pinewoods milkweed Asclepiadaceae > The milkweed family.

Asclepias incarnata

Swamp milkweed, rose milkweed, red milkweed, pleurisy root Asclepiadaceae > The milkweed family.

Asclepias latifolia

Broadleaf milkweed Asclepiadaceae > The milkweed family.

Asclepias pumila

Plains milkweed Asclepiadaceae > The milkweed family.

Asclepias speciosa

Showy milkweed Asclepiadaceae > The milkweed family.

Asclepias syriaca

Common milkweed Asclepiadaceae > The milkweed family.

Asclepias tomentosa

Tuba milkweed Asclepiadaceae > The milkweed family.

Asclepias tuberosa

Butterflyweed, butterfly milkweed Asclepiadaceae > The milkweed family.

Asclepias viridiflora

Green comet milkweed, green milkweed, short green-milkweed Asclepiadaceae > The milkweed family.

Asimina triloba

Pawpaw, paw-paw, papaw Annonaceae > The custard-apple family.

Asparagus densiflorus

Myers asparagus fern = Asparagus aethiopicus Liliaceae > The lily family.

Asparagus officinalis

Asparagus, garden asparagus Liliaceae > The lily family.

Asperugo procumbens

Madwort, catchweed, German madwort Boraginaceae > The borage family.

Asperula odorata

Sweet woodruff Rubiaceae > The madder family.

Aster frondosus

Short-rayed alkali aster = Symphyotrichum frondosum Asteraceae = Compositae > The sunflower family.

Aster occidentalis

Western aster = Symphyotrichum spathulatum Asteraceae = Compositae > The sunflower family.

Astragalus canadensis

Canadian milkvetch Fabaceae = Leguminosae > The pea family.

Astragalus lentiginosus

This species is not part of the Interactive Identification Guide.

Freckled milkvetch, mottled milkvetch Fabaceae = Leguminosae > The pea family.

photo of Astragalus lentiginosus — Astragalus lentiginosus: Most images are available for commercial use.

Astragalus purshii

Woollypod milkvetch, Pursh's milkvetch Fabaceae = Leguminosae > The pea family.

Atriplex canescens

Fourwing saltbush Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Atriplex hortensis

Garden orache Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Atriplex micrantha

Twoscale saltbush, twoscale orache = Atriplex heterosperma Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Atriplex patula

Common orache, spear-scale, spear orach, spear saltbush, ironroot, spreading orache Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Atriplex rosea

Tumbling orache, tumbling saltweed Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Atriplex semibaccata

Australian saltbush Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Atropa belladonna

Belladonna, deadly nightshade, divale, dwale, banewort, devil's-berries, naughty-man's-cherries, death-cherries, beautiful-death, devil's-herb, great-morel, dwayberry, sleeping nightshade. Solanaceae > The nightshade family.

Aurinia saxatilis

Basket-of-gold, rock madwort, goldentuft alyssum, golden alyssum, gold-dust, golden-tuft alyssum, golden-tuft madwort = Alyssum saxatile Brassicaceae = Cruciferae > The mustard family.

Avena barbata

Slender oat Poaceae = Gramineae > The grass family.

Avena fatua

Wild oat Note that "oat" is both the singular and plural form of the word, thus "sewing your wild oats" is grammatically (and often politically) incorrect :) Poaceae = Gramineae > The grass family.

Avena sativa

Oat, cultivated oat Poaceae = Gramineae > The grass family.

Axonopus furcatus

Big carpetgrass Poaceae = Gramineae > The grass family.

Azolla caroliniana

Carolina mosquitofern Salviniaceae > The water-fern family.

Azolla filiculoides

Red azolla, red waterfern Salviniaceae > The water-fern family.

Azolla mexicana

Mexican mosquitofern Salviniaceae > The water-fern family.

Baccharis halimifolia

Eastern baccharis, groundseltree Asteraceae = Compositae > The sunflower family.

Baccharis salicifolia

Great Plains false-willow, mule-fat, seepwillow, water-wally Asteraceae = Compositae > The sunflower family.

Bacopa monnieri

Herb-of-grace, waterhyssop, brahmi, thyme-leafed gratiola, water hyssop, Indian pennywort Plantaginaceae > The plantain family. Formerly in the Scrophulariaceae.

Baileya multiradiata

Desert marigold Asteraceae = Compositae > The sunflower family.

Balduina angustifolia

Coastal plain honeycomb-head Asteraceae = Compositae > The sunflower family.

Ballota nigra

Black horehound Lamiaceae = Labiatae > The mint family.

Balsamorhiza careyana

Carey's balsamroot Asteraceae = Compositae > The sunflower family.

Balsamorhiza sagittata

Arrowleaf balsamroot Asteraceae = Compositae > The sunflower family.

Baptisia australis

Blue wild indigo, blue false indigo Fabaceae = Leguminosae > The pea family.

Barbarea orthoceras

American yellowrocket Brassicaceae = Cruciferae > The mustard family.

Barbarea vulgaris

Winter-cress, common winter-cress, yellowrocket Brassicaceae = Cruciferae > The mustard family.

Bassia hyssopifolia

Five-hook bassia Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae. VERY similar to Bassia scoparia, look for the hooks on the fruits.

Bassia scoparia

Kochia, burningbush, summer cypress = Kochia scoparia Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Batis maritima

Saltwort, turtleweed Bataceae > The saltwort family.

Bebbia juncea

Sweetbush Asteraceae = Compositae > The sunflower family.

Beckmannia syzigachne

Sloughgrass Poaceae = Gramineae > The grass family.

Bellis perennis

English daisy, lawn daisy Asteraceae = Compositae > The sunflower family.

Berberis aquifolium

Oregon-grape, = Mahonia aquifolium Berberidaceae > The barberry family.

Berberis nervosa

Dwarf Oregon-grape, Cascades Oregon-grape, Cascades mahonia, dull Oregon-grape, longleaf mahonia Berberidaceae > The barberry family.

Berberis repens

Creeping Oregon-grape Berberidaceae > The barberry family.

Berberis thunbergii

Japanese barberry Berberidaceae > The barberry family.

Berberis verruculosa

Warty barberry, warted barberry Berberidaceae > The barberry family.

Berberis vulgaris

Common barberry Berberidaceae > The barberry family.

Berlanderia pumila

Soft greeneyes Asteraceae = Compositae > The sunflower family.

Berteroa incana

Hoary alyssum Brassicaceae = Cruciferae > The mustard family.

Berula erecta

Cutleaf waterparsnip Apiaceae = Umbelliferae > The parsley family.

Beta vulgaris

Beet, cultivated beet Amaranthaceae > The amaranth family. Formerly in the Chenopodiaceae.

Bidens alba

Shepherd's needles, butterfly needles, beggarticks, Spanish needles = Bidens pilosa Asteraceae = Compositae > The sunflower family.

Bidens aristosa

Bearded beggarticks Asteraceae = Compositae > The sunflower family.

Bidens bipinnata

Spanish-needles Asteraceae = Compositae > The sunflower family.

Bidens cernua

Nodding beggarticks Asteraceae = Compositae > The sunflower family.

Bidens frondosa

Devil's beggarticks Asteraceae = Compositae > The sunflower family.

Bidens mitis

Smallfruit beggarticks Asteraceae = Compositae > The sunflower family.

Bidens pilosa

Hairy beggarticks = Bidens alba Asteraceae = Compositae > The sunflower family.

Blechum pyramidatum

Blackweed, Browne's blechum, green shrimp plant, John bush, yerba-de-papagayo = Ruellia blechum Acanthaceae > The acanthus family.

Boehmeria cylindrica

False nettle, smallspike false nettle Urticaceae > The stinging nettle family.

Boerhavia diffusa

Red spiderling Nyctaginaceae > The four-o’clock family.

Borago officinalis

Borage Boraginaceae > The borage family.

Bothriochloa bladhii

Australian beardgrass = Andropogon bladhii Poaceae = Gramineae > The grass family.

Bouteloua curtipendula

Sideoats grama Poaceae = Gramineae > The grass family.

Bouteloua hirsuta

Hairy grama Poaceae = Gramineae > The grass family.

Bracteantha bracteata

Strawflower, everlasting daisy, golden everlasting Asteraceae = Compositae > The sunflower family.

Brassica elongata

Elongated mustard Brassicaceae = Cruciferae > The mustard family.

Brassica kaber

wild mustard, chadlock, charlock, field mustard = Sinapis arvensis Brassicaceae = Cruciferae > The mustard family.

Brassica nigra

Black mustard Brassicaceae = Cruciferae > The mustard family.