Cirsium fontinale var. obispoense J.T. Howell
Family: Asteraceae
Chorro Creek bog thistle
Images
not available
Basal leaves: longer spines 5-9 mm; distal faces more densely glandular than tomentose. Cauline leaves: longer spines 4-7 mm. Distalmost stem bracts tightly subtending heads or separated from them. Phyllaries 70-120, 28-38 of them reflexed; apical spines 2-3 mm; marginal spines usually absent. Cypselae 3.8-4 mm. 2n = 34. Flowering winter-summer (Jan-Sep). Serpentine seeps, coastal live oak woodlands, grasslands, riparian areas; of conservation concern; 40-300 m; Calif. Variety obispoense is known only from the southern Santa Lucia and San Luis ranges of San Luis Obispo County.

The National Science Foundation
This project made possible by National Science Foundation Award 1410069