Difference between revisions of "Cirsium hydrophilum var. hydrophilum"
Common names: Suisun thistle
Treatment appears in FNA Volume 19. Treatment on page 132.
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name=Cirsium hydrophilum var. hydrophilum | name=Cirsium hydrophilum var. hydrophilum | ||
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|tribe=Asteraceae tribe Cardueae | |tribe=Asteraceae tribe Cardueae | ||
|genus=Cirsium | |genus=Cirsium | ||
Revision as of 20:17, 16 December 2019
Heads usually 2.5–3 cm. Cypselae oblong, ca. 5 mm. 2n = 32.
Phenology: Flowering spring–summer (May–Sep).
Habitat: Tidal marshes
Elevation: 0–5 m
Discussion
Of conservation concern.
Suisun thistle is known only from the Suisun Marsh (Solano County) in the Sacramento River delta.
Variety hydrophilum is listed by the U.S. Fish and Wildlife Service as endangered.
Selected References
None.
Lower Taxa
None.