Calochortus umbellatus |
Calochortus clavatus |
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Oakland mariposa lily, Oakland star-tulip |
club hair mariposa, clubhair mariposa lily, slender mariposa lily |
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Habit | Plants usually bulbose; bulb coat, when present, membranous. | |||||||||||||||||
Stems | usually branching, 8–25 cm, not bearing bulblets. |
slender or coarse, stout, branching or not, strongly flexuous, 3–10 dm. |
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Leaves | basal persistent, 2–4 dm; blade lanceolate, flat; cauline usually present. |
basal withering, 1–2 dm; blade linear. |
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Inflorescences | subumbellate, 3–12-flowered. |
subumbellate, 1–6-flowered; bracts 4–8 cm, bases dilated. |
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Flowers | ± erect; perianth open, campanulate; sepals 10–14 mm; petals white to pale pink, usually with purple blotch near gland, widely obovate to cuneate, 12–18 mm, adaxial surface not ciliate, ± glabrous, margins irregularly dentate distally; glands basally convex, covered by broad, ciliate membrane, bordered distally by short hairs; filaments longer than anthers; anthers oblong, apex acute or obtuse. |
erect; perianth open, cup-shaped; sepals usually with red-brown blotch at base, lanceolate-ovate, 2–4 cm, apex acute; petals lemon to golden yellow, with transverse line distal to gland, broadly cuneate to obovate, 3–5 cm; glands round, deeply depressed, densely covered with short hairs with branching, coralline tips, surrounded by conspicuously fringed membrane and club-shaped hairs; filaments ca. 10 mm; anthers purplish brown, oblong, 4–10 mm. |
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Capsules | nodding, 3-winged, 1–2 cm. |
erect, lanceoloid-linear, angled, 6–9 cm, apex acuminate. |
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Seeds | dark brown, irregular. |
light yellow, translucent, flat. |
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2n | = 20. |
= 16. |
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Calochortus umbellatus |
Calochortus clavatus |
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Phenology | Flowering early spring–early summer. | |||||||||||||||||
Habitat | Openings in chaparral or woods, often on serpentine | |||||||||||||||||
Elevation | 100–700 m (300–2300 ft) | |||||||||||||||||
Distribution |
CA
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CA
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Discussion | Calochortus umbellatus grows around San Francisco Bay. It is reported also from Lake County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 5 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 127. | FNA vol. 26, p. 138. | ||||||||||||||||
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Mariposa clavata | |||||||||||||||||
Name authority | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868) | S. Watson: Proc. Amer. Acad. Arts 14: 265. (1879) | ||||||||||||||||
Web links |