Calochortus umbellatus |
Calochortus ambiguus |
|
---|---|---|
Oakland mariposa lily, Oakland star-tulip |
doubting mariposa lily |
|
Habit | Plants often bulbose; bulb coat membranous. | |
Stems | usually branching, 8–25 cm, not bearing bulblets. |
usually branching, straight. |
Leaves | basal persistent, 2–4 dm; blade lanceolate, flat; cauline usually present. |
basal withering; blade linear-attenuate. |
Inflorescences | subumbellate, 3–12-flowered. |
subumbellate, 1–4-flowered. |
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 pinkish or bluish gray, infrequently with longitudinal gray stripe, open, campanulate; sepals invested near gland, with yellowish, distally enlarged or branching, gland-tipped hairs, base sometimes marked with dull purple, apex acuminate; petals with median blotch usually surrounded by yellow zone, ± equaling sepals, base sometimes marked with dull purple; glands round to lunate, depressed, surrounded with narrow, deeply fringed membrane, densely covered with short, distally branching hairs; filaments shorter than anthers; anthers oblong-lanceolate, apex obtuse to acute. |
Capsules | nodding, 3-winged, 1–2 cm. |
erect, linear-oblong, 3-angled, apex acute. |
Seeds | dark brown, irregular. |
flat. |
2n | = 20. |
= 18. |
Calochortus umbellatus |
Calochortus ambiguus |
|
Phenology | Flowering early spring–early summer. | Flowering late spring–summer. |
Habitat | Openings in chaparral or woods, often on serpentine | Dry soils |
Elevation | 100–700 m (300–2300 ft) | 1100–2700 m (3600–8900 ft) |
Distribution |
CA
|
AZ; NM; UT
|
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.) |
|
Source | FNA vol. 26, p. 127. | FNA vol. 26. |
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus |
Sibling taxa | ||
Synonyms | C. watsonii var. ambiguus | |
Name authority | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868) | (M. E. Jones) Ownbey: Ann. Missouri Bot. Gard. 27: 505. (1940) |
Web links |