Carduus americanus (A.Gray) Greene

, Proc. Acad. Nat. Sci. Philadelphia 1892: 362 (1893). BHL
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External links to taxonomic opinions:
WFO POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:45489-2
Publication
Proceedings of the Academy of Natural Sciences of Philadelphia. Philadelphia, PA
Collation
1892: 362
Family as entered in IPNI
Asteraceae

Links

Nomenclatural link
Cnicus carlinoides var. americanus A.Gray, Proc. Amer. Acad. Arts 10: 48 (1874).
Same citation as
Carduus americanus Greene, Proc. Acad. Nat. Sci. Philadelphia 44: 362 (1893).