Difference between revisions of "Cirsium fontinale var. fontinale"
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Revision as of 18:35, 24 September 2019
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.
Phenology: Flowering spring–summer (Apr–Aug).
Habitat: Serpentine seeps
Elevation: ca. 120 m
Discussion
Of conservation concern.
Variety fontinale is known only from the vicinity of Crystal Springs Reservoir, San Mateo County.
Selected References
None.
Lower Taxa
None.