Difference between revisions of "Helianthella castanea"
Erythea 1: 127. 1893.
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|publication year=1893 | |publication year=1893 | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae |
Revision as of 21:36, 16 December 2019
Plants 15–45 cm. Cauline leaves: largest proximal to mid stems; blades sometimes ± 3-nerved, oblong or elliptic to broadly-oblanceolate, 10–15 cm, faces sparsely hirsute (mostly abaxially and near margins). Heads borne singly, erect. Involucres hemispheric, 25–40 mm diam. Phyllaries (usually outer 3–4+ foliaceous, 3–10 cm, curling over heads) lanceolate to lance-oblong (margins usually ciliate, abaxial faces densely pubescent or glabrate). Paleae chartaceous, relatively firm. Ray florets 12–21; laminae (10–)20–30 mm. Disc corollas yellow. Cypselae weakly compressed (plump in middles, edges thin, faces, glabrous); pappi 0 or of 2 ± subulate scales. 2n = 30.
Phenology: Flowering Apr–May.
Habitat: Grassy hillsides
Elevation: 0–1200 m
Discussion
Helianthella castanea is known only from the San Francisco Bay area.
Selected References
None.