Canada thistle
Cirsium arvense (L.) Scop.

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  1. Descriptor:           (show all)

    Flower(s) (76)
    Plant(s) (49)
    Foliage (35)
    Seedling(s) (24)
    Infestation (16)

Gender:

Female (3)
Male (1)

Image Setting:

Field (194)
Laboratory (31)
Illustration (2)
Museum (1)

  1. View:                     (show all)

    Close-up (2)
    Ventral / Adaxial / Front (1)
    Lateral / Side (1)
    Anterior / Apical (1)
    Posterior / Basal (1)

Person in Image:

Yes (1)

  1. Country:                

    United States (210)
    Czechia (14)
    New Zealand (3)
    Norway (1)

  1. Author:                  (show all)

    Leslie J. Mehrhoff (68)
    Ohio State Weed Lab Archive (39)
    Mary Ellen (Mel) Harte (18)
    Jan Samanek (14)
    Bruce Ackley (13)

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5 sizes(126)
4 sizes(88)
3 sizes(14)

Orientation:

Landscape (186)
Portrait (42)
Remove Filters: Weeds(X)
228 Images    

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5451439
5451439
Flower(s)
Leslie J. Mehrhoff

5307006
5307006
Plant(s)
USDA PLANTS Database

5307004
5307004
Plant(s)
USDA PLANTS Database

5451434
5451434
Plant(s)
Leslie J. Mehrhoff

5451440
5451440
Flower(s)
Leslie J. Mehrhoff

5451442
5451442
Plant(s)
Leslie J. Mehrhoff

5451444
5451444
Plant(s)
Leslie J. Mehrhoff

5451433
5451433
Plant(s)
Leslie J. Mehrhoff

5451443
5451443
Plant(s)
Leslie J. Mehrhoff

5451446
5451446
Flower(s)
Leslie J. Mehrhoff

5451431
5451431
Plant(s)
Leslie J. Mehrhoff

5451408
5451408
Flower(s)
Leslie J. Mehrhoff

5451441
5451441
Flower(s)
Leslie J. Mehrhoff

5376370
5376370
Fruit(s)
Julia Scher

5376369
5376369
Fruit(s)
Julia Scher

5376368
5376368
Fruit(s)
Julia Scher

5376367
5376367
Fruit(s)
Julia Scher

5451437
5451437
Flower(s)
Leslie J. Mehrhoff

5451438
5451438
Flower(s)
Leslie J. Mehrhoff

5451452
5451452
Flower(s)
Leslie J. Mehrhoff

5451387
5451387
Foliage
Leslie J. Mehrhoff

5451449
5451449
Plant(s)
Leslie J. Mehrhoff

5451385
5451385
Stem(s)
Leslie J. Mehrhoff

5451412
5451412
Foliage
Leslie J. Mehrhoff

5451450
5451450
Plant(s)
Leslie J. Mehrhoff

5451451
5451451
Plant(s)
Leslie J. Mehrhoff

5451411
5451411
Flower(s)
Leslie J. Mehrhoff

5451406
5451406
Plant(s)
Leslie J. Mehrhoff

5451389
5451389
Flower(s)
Leslie J. Mehrhoff

5451447
5451447
Flower(s)
Leslie J. Mehrhoff

5451430
5451430
Foliage
Leslie J. Mehrhoff

5451405
5451405
Foliage
Leslie J. Mehrhoff

5451400
5451400
Foliage
Leslie J. Mehrhoff

5451395
5451395
Foliage
Leslie J. Mehrhoff

5451419
5451419
Flower(s)
Leslie J. Mehrhoff

5451418
5451418
Flower(s)
Leslie J. Mehrhoff

5451398
5451398
Flower(s)
Leslie J. Mehrhoff

5451401
5451401
Stem(s)
Leslie J. Mehrhoff

5451414
5451414
Flower(s)
Leslie J. Mehrhoff

5451409
5451409
Flower(s)
Leslie J. Mehrhoff

5451402
5451402
Flower(s)
Leslie J. Mehrhoff

5451397
5451397
Plant(s)
Leslie J. Mehrhoff

5451399
5451399
Stem(s)
Leslie J. Mehrhoff

5451394
5451394
Foliage
Leslie J. Mehrhoff

5451383
5451383
Foliage
Leslie J. Mehrhoff

5451384
5451384
Foliage
Leslie J. Mehrhoff

5451367
5451367
Plant(s)
Leslie J. Mehrhoff

5451368
5451368
Plant(s)
Leslie J. Mehrhoff

5451365
5451365
Plant(s)
Leslie J. Mehrhoff

5451455
5451455
Foliage
Leslie J. Mehrhoff

5451456
5451456
Flower(s)
Leslie J. Mehrhoff

5451454
5451454
Flower(s)
Leslie J. Mehrhoff

5451448
5451448
Flower(s)
Leslie J. Mehrhoff

5451445
5451445
Flower(s)
Leslie J. Mehrhoff

5451422
5451422
Flower(s)
Leslie J. Mehrhoff

5451423
5451423
Flower(s)
Leslie J. Mehrhoff

5451427
5451427
Flower(s)
Leslie J. Mehrhoff

5451413
5451413
Flower(s)
Leslie J. Mehrhoff

5451415
5451415
Flower(s)
Leslie J. Mehrhoff

5451416
5451416
Flower(s)
Leslie J. Mehrhoff

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