Cirsium arvense (L.) Scop.
PERENNIAL THISTLE
Creeping thistle; Canada Thistle; Serratula arvensis L; Carduus arvensis L Robson; Cnicus arvensis L Roth; Breea arvensis L Less; Cephalonoplos arvensis L Fourr; Carduus lanatus Roxb ex Willd; Cirsium lanatum Roxb ex Willd Spreng
Life   Plantae   Dicotyledoneae   Asteraceae   Cirsium

Links
80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
Cirsium arvense
© Copyright Bobby Hattaway 2011 · 5
Cirsium arvense
Cirsium arvense
© Copyright Bobby Hattaway 2011 · 5
Cirsium arvense

Cirsium arvense
© Copyright Bobby Hattaway 2011 · 5
Cirsium arvense
Cirsium arvense
© Copyright Bobby Hattaway 2011 · 5
Cirsium arvense

Cirsium arvense
© Copyright Bobby Hattaway 2011 · 5
Cirsium arvense
Cirsium arvense
© Les Mehrhoff, 2008-2010 · 4
Cirsium arvense

Cirsium arvense, Canada Thistle
© Copyright Sheryl Pollock 2011 · 3
Cirsium arvense, Canada Thistle
Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense

Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense
Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense

Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense
Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense

Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense
Cirsium arvense
© Copyright Mel Harte 2010 · 3
Cirsium arvense

Associates · map
FamilyScientific name @ source (records)
Agaricaceae  Phoma cirsii @ BPI (1)
Albuginaceae  Albugo spinulosus @ BPI (10)

Albugo tragopogonis @ BPI (36)
Andrenidae  Andrena crataegi @ UCMS_ENT (2)

Andrena medionitens @ BBSL (1)

Andrena vicina @ UCMS_ENT (1)
Aphididae  Aphis ( @ AMNH_PBI (5); NCSU_ENT (4)

Brachycaudus ( @ AMNH_PBI (2); CSUC_TCN (1); NCSU_ENT (1)

Capitophorus carduinus @ NCSU_ENT (3)

Capitophorus elaeagni @ AMNH_PBI (2); NCSU_ENT (3)

Macrosiphum ( @ NCSU (1)

Uroleucon ( @ NCSU (7)
Apidae  Anthophora terminalis @ RMBL_ENT (1)

Anthophora urbana @ BBSL (1)

Apis mellifera @ BBSL (1); MLSB__N16- (13)

Bombus appositus @ BBSL (1)

Bombus ashtoni @ CUIC_ENT (4)

Bombus bimaculatus @ MLSB__N16- (1)

Bombus californicus @ BBSL__JPS (1)

Bombus caliginosus @ BBSL (2)

Bombus fervidus @ BBSL__JPS (11); UCMS_ENT (1)

Bombus flavifrons @ DART_ENT (1)

Bombus griseocollis @ BBSL (1); MLSB__N16- (3); UCMS_ENT (1)

Bombus huntii @ BBSL (3)

Bombus insularis @ BBSL (3)

Bombus lapidarius @ I_JSA (3)

Bombus mixtus @ BBSL (5)

Bombus occidentalis @ BBSL__JPS (2)

Bombus rufocinctus @ BBSL (27)

Bombus suckleyi @ BBSL (1)

Bombus vagans @ BBSL__JPS (1)

Ceratina calcarata @ MLSB__N16- (9); UCMS_ENT (6)

Ceratina dupla @ UCMS_ENT (4)

Ceratina mikmaqi @ UCMS_ENT (1)

Ceratina nanula @ BBSL (1)

Diadasia enavata @ BBSL (6)

Melissodes bimaculatus @ MLSB__N16- (1)

Melissodes desponsa @ CUIC_ENT (23)

Melissodes rivalis @ BBSL (1)

Melissodes subillatus @ MLSB__N16- (1)

Nomada articulata @ UCMS_ENT (1)

Svastra obliqua @ BBSL (1)

Triepeolus donatus @ CUIC_ENT (15)

Xylocopa virginica @ CUIC_ENT (1)
Botryosphaeriaceae  Phyllosticta cirsii @ BPI (2)
Braconidae  Lysiphlebus ( @ AMNH_PBI (3)
Ceratostomataceae  Sphaeroderma theleboloides @ BPI (1)
Chrysomelidae  Diabrotica undecimpunctata @ MLSB__N16- (1)
Coccinellidae  Harmonia axyridis @ MLSB__N16- (1)
Colletidae  Colletes fulgidus @ BBSL (1)

Colletes kincaidii @ BBSL (1)

Colletes phaceliae @ BBSL (4)

Colletes simulans @ CUIC_ENT (1)

Hylaeus affinis/modestus @ MLSB__N16- (1)

Hylaeus affinis @ UCMS_ENT (4)

Hylaeus bisinuatus @ BBSL (1)

Hylaeus episcopalis @ BBSL (7); RMBL_ENT (1)

Hylaeus modestus @ UCMS_ENT (1); RMBL_ENT (1)

Hylaeus schwarzii @ UCMS_ENT (1)

Hylaeus wootoni @ BBSL (1)

Leioproctus fulvescens @ BBSL (1)
Crabronidae  Bembix americana @ I_ADG (1)

Glenostictia pictifrons @ I_ADG (1)
Dermateaceae  Mollisia cinerea @ BPI (1)

Mollisia teucrii @ BPI (2)

Niptera carduorum @ BPI (1)
Erysiphaceae  Erysiphe cichoracearum @ BPI (3)

Erysiphe mayorii @ BPI (4)

Sphaerotheca fuliginea @ BPI (1)
Halictidae  Agapostemon angelicus @ BBSL (1)

Agapostemon virescens @ BBSL (5); UCMS_ENT (7)

Halictus farinosus @ BBSL (1)

Halictus ligatus @ UCMS_ENT (1)

Halictus tripartitus @ BBSL (2)

Lasioglossum coriaceum @ UCMS_ENT (1)

Lasioglossum egregium @ BBSL (1)

Lasioglossum pectorale @ UCMS_ENT (3)

Lasioglossum pilosum @ AMNH_BEE (1)

Lasioglossum pruinosum @ BBSL (1)

Lasioglossum sisymbrii @ BBSL (1)

Lasioglossum titusi @ BBSL (2)

Sphecodes confertus @ AMNH_BEE (2)
Helotiaceae  Cyathicula cyathoidea @ BPI (2)
Megachilidae  Heriades carinata @ MLSB__N16- (1)

Megachile brevis @ BBSL (1)

Megachile centuncularis @ MLSB__N16- (1)

Megachile frigida @ MLSB__N16- (1)

Megachile inermis @ CUIC_ENT (1)

Megachile latimanus @ CUIC_ENT (9); UCMS_ENT (1)

Megachile mendica @ MLSB__N16- (1)

Megachile pugnata @ CUIC_ENT (7)

Megachile texana @ BBSL (1)

Megachile wheeleri @ BBSL (2)

Osmia bruneri @ BBSL (1)

Osmia californica @ BBSL (1)

Osmia coloradensis @ BBSL__BBSLID (2)
Membracidae  Campylenchia latipes @ NCSU (1); UDCC_NRI (2)

Entylia carinata @ UDCC_TCN (56); NCSU (6); UDCC_NRI (2)
Miridae  Lygus hesperus @ NCSU_ENT (5)

Slaterocoris breviatus @ AMNH_PBI (1)

Stenotus binotatus @ NCSU_ENT (2)
Muscidae  Stomoxys calcitrans @ MLSB__N16- (1)
Mycosphaerellaceae  Mycosphaerella cirsii-arvensis @ BPI (7)

Ramularia cirsii-arvensis @ BPI (1)

Ramularia filaris @ BPI (1)

Septoria arvensis @ BPI (1)

Septoria cirsii @ BPI (31)
Nectriaceae  Fusarium tricinctum @ BPI (1)
Peronosporaceae  Bremia lactucae @ 786296A (1); BPI (6)
Phaeosphaeriaceae  Ophiobolus acuminatus @ BPI (4)

Ophiobolus cirsii @ BPI (1)
Pleosporaceae  Alternaria montanica @ BPI (1)
Pucciniaceae  Puccinia cirsii @ BPI (4)

Puccinia obtegens @ BPI (19)

Puccinia punctiformis @ BPI (232)

Puccinia suaveolens @ 786296B (1); BPI (118); 842765B (1); 842765A (1)

Puccinia @ BPI (1)
Rhytismataceae  Leptostroma herbarum @ BPI (1)
Syrphidae  Syritta pipiens @ MLSB__N16- (1)
Tricholomataceae  Helotium herbarum @ BPI (1)
Typhulaceae  Pistillaria micans @ BPI (1)

Typhula grevillei @ 296014A (1); 296014B (1)
_  Aecidiolum cirsii @ BPI (1)

Cystopus tragopogonis @ BPI (1)

Pyrenochaeta erysiphoides @ BPI (1)

Sphaeronaema sessatulae @ BPI (1)

Uredo suaveolens @ BPI (2)

go to Discover Life's Facebook group

Following modified from PCA Alien Plant Working Group
   Top | See original

&pull 20q v4.662 20091102: Error 301 Moved Permanently http://www.nps.gov/plants/alien/fact/ciar1.htm

Following modified from Global Invasive Species Team, The Nature Conservancy
   Top | See original

&pull 20q v4.662 20091102: Error 403 Forbidden http://wiki.bugwood.org/Cirsium_arvense/

ERROR -- Need to remove recursive link: http://pick18.pick.uga.edu/mp/20p%3Fsee%3DI_USID139%26res%3D320 USID_Seeds

Following modified from Delaware Wildflowers
   Top | See original

Delaware Wildflowers  •  Scientific names

Cirsium arvense (L.) Scop. Canada Thistle
Asteraceae — Aster family
Invasive non-native
Cirsium arvense
White Clay Creek State Park -- Possum Hill
June 2001 Cirsium arvense
Prides Crossing
September 2009 Cirsium arvense
White Clay Creek State Park -- Possum Hill
June 2011

Guide to Cirsium of Delaware

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

Following modified from MissouriPlants.com
   Top | See original


Cirsium arvense (L.) Scop. - Canada Thistle

Cirsium arvense plant

Family - Asteraceae

Stems - To +1m tall, from horizontal rhizomes (deep), glabrous or very sparse pubescent at base, striate, herbaceous, erect, branching near apex, hollow.

Cirsium arvense stem

Leaves - Alternate, to -15cm long, 6-7cm broad, sessile, pinnately lobed, with spines on margins, sparse arachnoid pubescent (mostly on lobes below). Upper leaves less lobed to serrate.

Cirsium arvense leaf

Inflorescence - Single terminal flower heads in loose corymbiform arrangement. Branches of inflorescence (peduncles) arachnoid pubescent.

Involucre - To 1.5cm tall (long), 8-9mm in diameter, suburceolate. Phyllaries imbricate, appressed, with dark purple tips. Tips acute, to 1mm long, slightly spreading. Innermost phyllaries to 1.1cm long, 1.5mm broad, glabrous, with scarious margins. Outer phyllaries with sparse to moderate arachnoid pubescence.

Cirsium arvense involucre Involucre.

Ray flowers - Absent.

Disk flowers - Corolla pink, 5-lobed. Lobes 2.5-3mm long, linear, thickened at apex with small protuberance. Corolla tube 1.1cm long, lilac-whitish. Achenes to 2mm long, glabrous, white(in flower) terete to weakly 4-angled. Pappus of dense plumose bristles to 1cm long. Receptacle flat.

Cirsium arvense flowers

Cirsium arvense fruits Fruiting head.

Flowering - June - October.

Habitat - Fields, waste ground, roadsides, railroads.

Origin - Native to Europe.

Other info. - This is a nasty little plant. It is not too common in Missouri yet but most certainly will be soon. It is very common in states to the north and east. The plant is considered a noxious weed and should not be spread. It is quite aggressive and because of its deep rhizomes is very hard to eradicate.
C. arvense is dioecious and the flower heads are quite variable depending on if they are staminate or pistillate. The species can also vary on pubescence, flower color, and leaf shape. A white-flowered form, form albiflorum (Rand & Redf.) , has not yet been reported from Missouri.

Cirsium arvense white flowers

Photographs taken in Spencer, WI., 8-6-04.


Back


Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=CIAR4 ---> https://plants.usda.gov/java/profile?symbol=CIAR4
https://plants.usda.gov/java/profile?symbol=CIAR4 ---> http://plants.usda.gov/core/profile?symbol=CIAR4
http://plants.usda.gov/core/profile?symbol=CIAR4 ---> https://plants.usda.gov/core/profile?symbol=CIAR4
Link: Skip repetitive navigation links
USDA and NRCS Identifier NRCS Logo
USDA.gov Web Site PLANTS photo banner
PLANTS Home  about PLANTS  PLANTS Team  Partners of PLANTS  What  National Plant Data Team Web Site  Help using PLANTS  Contact PLANTS
 
 Search the PLANTS Web site
 Name Search

 State Search
 Advanced Search
 Search Help
PLANTS Topics
 
 Alternative Crops
 Characteristics
 Classification
 Cover Crops
 Culturally Significant
 Distribution Update
 Documentation
 Fact Sheets & Plant Guides
 Introduced, Invasive, and Noxious Plants
 Threatened & Endangered
 Wetland Indicator Status
 
PLANTS Image Gallery
 
 50,000+ Plant Images
 
Download PLANTS data
 
 Complete PLANTS Checklist
 State PLANTS Checklist
 Advanced Search Download
 Symbols for Unknown Plants
 NRCS State GSAT Lists
 NRCS State Plants Lists
 
Related tools
 
 Crop Nutrient Tool
 Ecological Site Information System
 PLANTS Identification Keys
 Plant Materials Web Site
 Plant Materials Publications
 USDA Plant Hardiness Map
 
 
You are here: Home / Plant Profile

Cirsium arvense (L.) Scop.
Canada thistle

Image of Cirsium arvense

General Information
Symbol: CIAR4
Group: Dicot
Family: Asteraceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : AK   I
CAN   I
GL   I
L48   I
SPM   I
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Cirsium thumbnails at the Plants Gallery

Robert H. Mohlenbrock. USDA NRCS. 1992. Western wetland flora: Field office guide to plant species . West Region, Sacramento. Provided by USDA NRCS Wetland Science Institute (WSI). Usage Requirements .

©Gary A. Monroe. United States, OR, Harney Co. July 27, 2002. Usage Requirements .

©Gary A. Monroe. United States, OR, Harney Co. July 27, 2002. Usage Requirements .

Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory . United States, IL, Aurora. Usage Requirements .

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

©Lindsey Koepke. United States, WA, Pierce Co., Ashford, Tahoma Woods. August 6, 2005. Usage Requirements .

©Lindsey Koepke. United States, WA, Pierce Co., Ashford, Tahoma Woods. August 6, 2005. Usage Requirements .

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 553. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .

USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. Provided by NRCS National Wetland Team . Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
BRAR20 Breea arvensis (L.) Less.
BRIN18 Breea incana (S.G. Gmel.) W.A. Weber, ined.
CAAR29 Carduus arvensis (L.) Robson
CIARA3 Cirsium arvense (L.) Scop. var. argenteum (Vest) Fiori
CIARH Cirsium arvense (L.) Scop. var. horridum Wimm. & Grab.
CIARI2 Cirsium arvense (L.) Scop. var. integrifolium Wimm. & Grab.
CIARM Cirsium arvense (L.) Scop. var. mite Wimm. & Grab.
CIARV Cirsium arvense (L.) Scop. var. vestitum Wimm. & Grab.
CIIN7 Cirsium incanum (S.G. Gmel.) Fisch. ex M. Bieb.
CISE Cirsium setosum (Willd.) Besser ex M. Bieb.
SEAR12 Serratula arvensis L.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Asteridae
Order Asterales
Family Asteraceae ⁄ Compositae – Aster family
Genus Cirsium Mill. – thistle
Species Cirsium arvense (L.) Scop. – Canada thistle

Subordinate Taxa

This plant has no children

Legal Status

Noxious Weed Information
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds .
Alaska Canada thistle Noxious weed
Arizona Canada thistle Prohibited noxious weed
Arkansas Cirsium
thistle Noxious weed
California Canada thistle B list (noxious weeds)
Colorado Canada thistle B list (noxious weeds)
Connecticut Canada thistle Potentially invasive, banned
Delaware Canada thistle Noxious weed
Hawaii Canada thistle Noxious weed
Idaho Canada thistle Noxious weed
Illinois Canada thistle Noxious weed
Indiana Canada thistle Noxious weed
Iowa Cirsium
thistle Primary noxious weed Canada thistle Primary noxious weed
Kansas Canada thistle Noxious weed
Kentucky Canada thistle Noxious weed
Maryland Canada thistle Noxious weed
Michigan Canada thistle Noxious weed
Minnesota Canada thistle Prohibited noxious weed
Missouri Canada thistle Noxious weed
Montana Canada thistle Category 1 noxious weed
Nebraska Canada thistle Noxious weed
Nevada Canada thistle Noxious weed
New Mexico Canada thistle Class A noxious weed
North Carolina Canada thistle Class B noxious weed
North Dakota Canada thistle Noxious weed
Ohio Canada thistle Prohibited noxious weed
Oklahoma Canada thistle Noxious weed
Oregon Canada thistle "B" designated weed Canada thistle Quarantine
Pennsylvania Canadian thistle Noxious weed
South Dakota Canada thistle Noxious weed Canada thistle Regulated non-native plant species
Utah Canada thistle Noxious weed
Washington Canada thistle Class C noxious weed
Wisconsin Canada thistle Noxious weed
Wyoming Canada thistle Noxious weed
U.S. Weed Information
Cirsium Cirsium arvense Californian thistle Canada thistle creeping thistle field thistle This plant and the related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
STATE Assorted authors. State noxious weed lists for 46 states . State agriculture or natural resource departments.
Cal-IPC California Invasive Plant Council. 2006. California Invasive Plant Inventory. Cal-IPC Publication 2006-02 (1 February 2007). California Invasive Plant Council. Berkeley, California.
N'EAST Uva, R.H., J.C. Neal,and J.M. DiTomaso. 1997. Weeds of the Northeast . Cornell University Press. Ithaca, New York.
NE&GP Stubbendieck, J., G.Y. Friisoe,and M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains . Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.
SEEPPC Southeast Exotic Pest Plant Council. 1996. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council. Tennessee.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM . Southern Weed Science Society. Champaign, Illinois.
WI Hoffman, R.and K. Kearns (eds.). 1997. Wisconsin manual of control recommendations for ecologically invasive plants . Wisconsin Dept. Natural Resources. Madison, Wisconsin.
WSWS Whitson, T.D. (ed.) et al.. 1996. Weeds of the West . Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.

Wetland Status

Interpreting Wetland Status

North America
Alaska FAC
Arid West FACU
Atlantic and Gulf Coastal Plain FACU
Eastern Mountains and Piedmont FACU
Great Plains FACU
Midwest FACU
Northcentral & Northeast FACU
Western Mountains, Valleys, and Coast FAC

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (CIAR4)
CalPhotos (CIAR4)
Integrated Taxonomic Information System (CAAR29)
Integrated Taxonomic Information System (CIAR4)
Integrated Taxonomic Information System (CIARA3)
Integrated Taxonomic Information System (CIARH)
Integrated Taxonomic Information System (CIARI2)
Integrated Taxonomic Information System (CIARM)
Integrated Taxonomic Information System (CIARV)
Integrated Taxonomic Information System (CIIN7)
Integrated Taxonomic Information System (CISE)
Integrated Taxonomic Information System (SEAR12)
Jepson Interchange (University of California - Berkeley) (CIAR4)
Native American Ethnobotany (University of Michigan - Dearborn) (CIAR4)
USDA Forest Service Fire Effects Information System (CIAR4)
University of Tennessee Herbarium (Distribution) (CIAR4)
University of Washington Burke Museum (CIAR4)
University of Wisconsin - Stevens Point Freckmann Herbarium (CIAR4)
Related Websites
Arizona: abstract & image of Canada thistle (Cirsium arvense) (CIAR4)
CO-CSU Extension Fact Sheet (CIAR4)
CO-Douglas County Weed Education (CIAR4)
Canada-Invasive Exotic Plant Fact Sheets (CIAR4)
Colorado Plant Talk: Canada thistle (CIAR4)
Colorado-Douglas County: Integrated weed management of Canada thistle (CIAR4)
Idaho One Plan: noxious abstract & images (CIAR4)
Illinois Nature Preserve Commission: Canada thistle (CIAR4)
International Survey of Herbicide Resistant Weeds (WSSA) (CIAR4)
KS-Noxious Weeds in Kansas (CIAR4)
Montana WOW: Canada thistle (CIAR4)
NE-University of Nebraska Weed Publications (CIAR4)
NPCI Alien Plant Working Group: abstract & image (CIAR4)
NV-Extension Weed Wanted Posters (CIAR4)
NebGuide: Canada thistle (CIAR4)
OK-OSU Extension-Thistles and their Identification (CIAR4)
Ohio State University: Identifying noxious weeds (CIAR4)
Purdue University: Control practices for Canada thistle (CIAR4)
The Nature Conservancy: Wildland Weeds Management & Research Program (CIAR4)
UC Davis, IPM: abstract & images (CIAR4)
UT-Concepts of Biological Control (CIAR4)
UT-Unwanted Weeds-Utah Department of Transportation (CIAR4)
Victoria - Natural Resources & Environment: Landcare Notes (CIAR4)
Virginia Native Plant Society: Canada thistle (CIAR4)
Wisconsin Department of Natural Resources: abstract (CIAR4)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


 PLANTS Home | USDA.gov | NRCS | Site Map | Policies and Links
Accessibility Statement | Privacy Policy | Non-Discrimination Statement

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 97
Query: SELECT * FROM img WHERE ready=1 and taxon like "Cirsium arvense%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 3807 0083 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 2288 0073 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0177 3303 3353 0035 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0177 3303 3353 0039 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 2288 0068 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 2288 0071 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0177 3303 3353 0040 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 2288 0072 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0177 3303 3353 0036 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0177 3303 3353 0038 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Canada Thistle
(shown with Cirsium vulgare )
ID: 0175 3301 2288 0074 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Canada Thistle
ID: 8120 3181 4565 0057 [detail]
Charles Webber
© 1998 California Academy of Sciences

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 2288 0069 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Canada Thistle
ID: 8120 3181 4014 0130 [detail]
Charles Webber
© 1998 California Academy of Sciences

Cirsium arvense
Cirsium arvense
Canada Thistle
ID: 0177 3303 3353 0037 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 3807 0084 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 3807 0085 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Canada Thistle
ID: 0175 3301 2288 0067 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Creeping Thistle
ID: 0175 3301 2288 0070 [detail]
© 2001 CDFA

Cirsium arvense
Cirsium arvense
Californian Thistle
ID: 0000 0000 0904 0552 [detail]
© 2004 Steve Matson

Cirsium arvense
Cirsium arvense
Californian Thistle
ID: 0000 0000 0904 0554 [detail]
© 2004 Steve Matson

Cirsium arvense
Cirsium arvense
Californian Thistle
ID: 0000 0000 0105 1694 [detail]
© 2005 Louis-M. Landry

Cirsium arvense
Cirsium arvense
Californian Thistle
ID: 0000 0000 0105 1695 [detail]
© 2005 Louis-M. Landry

Cirsium arvense
Cirsium arvense
Californian Thistle
ID: 0000 0000 0105 1696 [detail]
© 2005 Louis-M. Landry

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 9
Query: SELECT * FROM img WHERE ready=1 and taxon like "Cirsium arvense var. arvense%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 5205 1622 2823 0049 [detail]
© 1995 Saint Mary's College of California

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 5205 1622 2823 0053 [detail]
© 1995 Saint Mary's College of California

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 0024 3291 1997 0078 [detail]
Charles Webber
© 2000 California Academy of Sciences

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 5205 1622 2823 0054 [detail]
© 1995 Saint Mary's College of California

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 5205 1622 2823 0052 [detail]
© 1995 Saint Mary's College of California

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 0000 0000 0904 0543 [detail]
© 2004 Steve Matson

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 0000 0000 0904 0549 [detail]
© 2004 Steve Matson

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 0000 0000 0904 0550 [detail]
© 2004 Steve Matson

Cirsium arvense var. arvense
Cirsium arvense var. arvense
Creeping Thistle
ID: 0000 0000 0904 0551 [detail]
© 2004 Steve Matson

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 1
Query: SELECT * FROM img WHERE ready=1 and taxon like "Cirsium arvense var. incanum%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Cirsium arvense var. incanum
Cirsium arvense var. incanum
Creeping Thistle
ID: 0000 0000 1002 0045 [detail]
© 2002 Molly Elizabeth Bagley

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Updated: 2017-09-24 01:12:37 gmt
Discover Life | Top
© Designed by The Polistes Corporation