Difference between revisions of "Chaenactis glabriuscula var. orcuttiana"
Univ. Calif. Publ. Bot. 3: 192. 1907.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Revision as of 21:32, 16 December 2019
Plants 10–30 cm; proximal indument grayish, sparsely arachnoid. Stems mostly 3–7(–12), ± horizontal; branches proximal and distal. Leaves basal (withering) and cauline, mostly 2–5 cm; largest blades ± plane to 3-dimensional, succulent, mostly 2-pinnately lobed; primary lobes 2–7 pairs, ± congested, ultimate lobes ± plane to involute. Heads mostly 2–5 per stem. Peduncles 1–4 cm. Involucres ± hemispheric. Phyllaries: longest 4.5–6.5(–9) × 1–2 mm; outer predominantly stipitate-glandular and ± villous in fruit. Florets: inner corollas 4.5–5.5 mm. Cypselae 4–5 mm; pappi of 4 scales in 1 series, longest scales mostly 1–2.5 mm, lengths 0.2–0.5 times corollas. 2n = 12.
Phenology: Flowering late Apr–Jun.
Habitat: Coastal dunes and bluffs
Elevation: 0–100 m
Distribution
Calif., Mexico (Baja California).
Discussion
Of conservation concern.
Variety orcuttiana is known along the coast from near Santa Barbara to northwestern Baja California. It appears to intergrade with var. glabriuscula shortly inland.
Selected References
None.