Flora of North America species comparison

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Carduus pycnocephalus

Carduus acanthoides

compact-head thistle, Italian plumeless thistle, Italian thistle

chardon épineux, plumeless thistle, spiny plumeless-thistle, welted thistle

Carduus pycnocephalus

Carduus acanthoides
Distribution
from FNA
AL; AR; CA; ID; MS; NY; OR; PA; SC; TX; Eurasia (Mediterranean region)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; CO; IA; ID; IL; KS; MD; MI; MN; MO; MT; NC; ND; NE; NJ; NY; PA; RI; SD; VA; VT; WI; WV; WY; BC; NB; NS; ON; QC; Eurasia
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Subspecies 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 93. FNA vol. 19, p. 92.
Parent taxa Asteraceae > tribe Cardueae > Carduus Asteraceae > tribe Cardueae > Carduus
Sibling taxa
C. acanthoides, C. crispus, C. nutans, C. tenuiflorus
C. crispus, C. nutans, C. pycnocephalus, C. tenuiflorus
Subordinate taxa
C. pycnocephalus subsp. pycnocephalus
C. acanthoides subsp. acanthoides
Name authority Linnaeus: Sp. Pl. ed. 2, 2: 1151. (1763) Linnaeus: Sp. Pl. 2: 821. (1753)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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