COMMON NAME: Elk Thistle
FAMILY: Asteraceae (Sunflower Family)
Unabridged Note: Past taxonomic treatments have variably recognized members of this complex as multiple species, some as subspecies and/or varieties or have merged all or most variants into a single polymorphic sp. with extraordinary variability. See Keil 2006 for discussion. Hybrids are known or suspected in many cases where forms of Cirsium scariosum meet other native thistle species. Unusual variants in herbaria may represent unrecognized hybrids or their descendants.
eFlora Treatment Author: David J. Keil