mount tamalpais thistle

Cirsium hydrophilum var. vaseyi

Member of suisun thistle (Cirsium hydrophilum)
plume thistles (genus Cirsium)
thistles
sunflower family (family Asteraceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)

abaxial face of outer and middle phyllaries with long, sticky-resinous ridge (milky when fresh, dark when dry, occasionally very narrow)
margins of phyllaries minutely spiny-fringed
Mt. Tam

Chris’s observations: none

Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora