Family: Asteraceae Aster Family
Genus: Cirsium Thistle
Spiny, biennial or perennial herbs (rarely annuals). Thistles of the genus Cirsium are distinguished by their feathery pappus from members of the genus Carduus (plumeless or simple pappus).
Scientific Name: Cirsium undulatum (Nutt.) Spreng.
Common Name(s): Wavy-leaf Thistle, Gray Thistle, Wavyleaf Bullthistle
Growth Type: perennial/biennial
Species Description:
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 | Caption:
ID: Hrb-CIRUN-001
Source: 35mm slide (photo)
Credit:
Keyword(s): leaf, vegetative
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 | Caption:
ID: Hrb-CIRUN-002
Source: 35mm slide (photo)
Credit:
Keyword(s): flowering, inflorescense, vegetative
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 | Caption:
ID: Hrb-CIRUN-003
Source: 35mm slide (photo)
Credit:
Keyword(s): seed
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