Calochortus umbellatus |
Calochortus venustus |
|
---|---|---|
Oakland mariposa lily, Oakland star-tulip |
butterfly mariposa lily, square mariposa tulip |
|
Habit | Plants bulbose; bulb coat membranous. | |
Stems | usually branching, 8–25 cm, not bearing bulblets. |
usually branching, 1–6 dm. |
Leaves | basal persistent, 2–4 dm; blade lanceolate, flat; cauline usually present. |
basal withering, 1–2 dm; blade linear. |
Inflorescences | subumbellate, 3–12-flowered. |
subumbellate, 1–6(–10)-flowered; bracts 2–8 cm. |
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, campanulate; sepals lanceolate, 3–5 cm, apex recurved; petals white to brightly or deeply yellow, purple, or dark red, with dark red median blotch, often with second paler distal blotch, obovate or cuneate to clawed, rounded, 3–5 cm, with scattered proximal hairs, apex retuse to obtuse; glands in lower middle of petal, ± square, sometimes ovate, not depressed, covered with short, orange to red-purple hairs; filaments usually equaling anthers; anthers linear-lanceolate to oblong. |
Capsules | nodding, 3-winged, 1–2 cm. |
erect, linear, angled, 5–6 cm. |
Seeds | dark brown, irregular. |
light beige, ± flat, 4–6 mm. |
2n | = 20. |
= 14. |
Calochortus umbellatus |
Calochortus venustus |
|
Phenology | Flowering early spring–early summer. | Flowering mid spring–mid summer. |
Habitat | Openings in chaparral or woods, often on serpentine | Light sandy soil, often in decomposed granite in valley grassland, foothill woodland, and pine forest |
Elevation | 100–700 m (300–2300 ft) | 300–2700 m (1000–8900 ft) |
Distribution |
CA
|
CA
|
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.) |
Flower color and pattern are very showy and exceedingly variable in Calochortus venustus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 127. | FNA vol. 26, p. 134. |
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus |
Sibling taxa | ||
Synonyms | Mariposa venusta | |
Name authority | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868) | Douglas ex Bentham: Trans. Hort. Soc. London, ser. 2, 1: 412, plate 15, fig. 3. (1835) |
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