swamp thistle

Cirsium douglasii var. douglasii

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

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CalPhotos

• abaxial face of outer and middle phyllaries with long, sticky-resinous ridge (milky when fresh, dark when dry, occasionally very narrow)
• margins of phyllaries entire
• stem with few or 0 coarse, multicellular hairs, thinly to densely cobwebby or tomentose with long fine hairs
• cauline leaves generally not clasping with expanded basal lobes
• leaf veins generally not prominently raised abaxially
• Mt. Diablo

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Chris’s observations: none

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

Bay Area species: iNaturalist – Calflora