Calochortus umbellatus |
Calochortus weedii |
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Oakland mariposa lily, Oakland star-tulip |
foothill mariposa lily, Weed's mariposa, Weed's mariposa lily |
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Habit | Plants usually bulbose; bulb coat fibrous-reticulate. | |||||||||
Stems | usually branching, 8–25 cm, not bearing bulblets. |
slender, usually branching, 3–9 dm. |
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Leaves | basal persistent, 2–4 dm; blade lanceolate, flat; cauline usually present. |
basal withering, 2–4 dm; blade linear to lanceolate. |
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Inflorescences | subumbellate, 3–12-flowered. |
2–6-flowered; bracts resembling distal cauline leaves. |
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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, broadly campanulate; sepals ovate to lanceolate, attenuate, 2–3 cm; petals orange-yellow, flecked, broadly cuneate or obovate, ca. 2–3 cm, adaxially bearded with long yellow hairs, margins often red-brown, dentate or fringed; glands round, slightly depressed, ± glabrous, surrounded by ring of long, dense, obscuring yellow hairs; filaments 8–12 mm; anthers lanceolate-oblong, apex acute. |
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Capsules | nodding, 3-winged, 1–2 cm. |
erect, linear, angled, 4–5 cm, apex acute. |
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Seeds | dark brown, irregular. |
light beige. |
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2n | = 20. |
= 18. |
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Calochortus umbellatus |
Calochortus weedii |
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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; Mexico (Baja California)
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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 4 (3 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. 141. | ||||||||
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868) | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 169. (1868) | ||||||||
Web links |