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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Revision as of 19:35, 24 September 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.