Calochortus umpquaensis |
Calochortus umbellatus |
|
---|---|---|
Umpqua mariposa-lily |
Oakland mariposa lily, Oakland star-tulip |
|
Stems | not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous. |
usually branching, 8–25 cm, not bearing bulblets. |
Leaves | basal solitary, clasping; blade narrowly lanceolate, hairy, adaxially hispid, abaxially glabrous, sometimes glaucous. Inflorescences 1–several-flowered; bracts 2, suboppo-site, narrowly lanceolate. |
basal persistent, 2–4 dm; blade lanceolate, flat; cauline usually present. |
Inflorescences | subumbellate, 3–12-flowered. |
|
Flowers | erect; perianth open, campanulate; sepals lanceolate-acuminate, ca. 2 cm; petals white to cream, with dark purple-black, pentagonal to lunate blotch, broadly oblong to obovate, 3.5 cm, bearded, adaxial surface typically minutely papillose, margins erose; glands transversely oblong-lunate, slightly depressed, with 0.7–1.4 mm-wide band of short dendritic hairs distally, hairs surrounded by lime-green coloration and purple striations; anthers lanceolate, apex acuminate. |
± 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. |
Capsules | nodding, 3–5.4 cm. |
nodding, 3-winged, 1–2 cm. |
Seeds | 2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge. |
dark brown, irregular. |
2n | = 20. |
= 20. |
Calochortus umpquaensis |
Calochortus umbellatus |
|
Phenology | Flowering late spring–mid summer. | Flowering early spring–early summer. |
Habitat | Grassland-forest ecotones in serpentine-derived soils | Openings in chaparral or woods, often on serpentine |
Elevation | 300–500 m (1000–1600 ft) | 100–700 m (300–2300 ft) |
Distribution |
OR
|
CA
|
Discussion | Of conservation concern. Calochortus umpquaensis is known only from Watson and Ace Williams mountains on both sides of the Little River, Douglas County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. 130. | FNA vol. 26, p. 127. |
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus |
Sibling taxa | ||
Name authority | Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 168. (1868) |
Web links |