EcoFlora - Cirsium fontinale var. fontinale

Cirsium fontinale var. fontinale (Greene) Jeps.
Family: Asteraceae Fountain thistle Images not available	FNA Resources David J. Keil in Flora of North America (vol. 19, 20 and 21) Basal leaves: longer spines 4-6 mm; distal faces more densely glandular than tomentose. Cauline leaves: longer spines 8-12 mm. Distalmost stem bracts usually tightly subtending heads. Phyllaries 100-120, 35-45 of them reflexed; apical spines 1-2 mm; marginal spines often present. Cypselae 4.1-5 mm. 2n = 34, 34 + 1B. Flowering spring-summer (Apr-Aug). Serpentine seeps; of conservation concern; ca. 120 m; Calif. Variety fontinale is known only from the vicinity of Crystal Springs Reservoir, San Mateo County.
Click to Display 0 Total Images