Calochortus umpquaensis |
Calochortus nudus |
|
---|---|---|
Umpqua mariposa-lily |
naked mariposa lily, naked star tulip, Shasta star-tulip |
|
Stems | not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous. |
usually not branching, 1–3 dm. |
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, 0.5–2 dm; blade lanceolate, tapering at base, flat, glabrous adaxially. |
Inflorescences | 1–several-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 lanceolate, 10–12 mm, glabrous, apex acuminate; petals pale lavender, widely obovate, 14–16 mm, adaxial surface ± glabrous, not ciliate; glands not deeply depressed, bordered proximally by wide, ciliate membranes; anthers linear-oblong, apex obtuse or acute. |
Capsules | nodding, 3–5.4 cm. |
erect, 3-winged, 1–2 cm. |
Seeds | 2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge. |
light brown, irregular. |
2n | = 20. |
= 20. |
Calochortus umpquaensis |
Calochortus nudus |
|
Phenology | Flowering late spring–mid summer. | Flowering late spring–mid summer. |
Habitat | Grassland-forest ecotones in serpentine-derived soils | Moist grassy areas, meadows, lake and bog margins |
Elevation | 300–500 m (1000–1600 ft) | 1200–2500 m (3900–8200 ft) |
Distribution |
OR
|
CA; OR
|
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 nudus hybridizes with C. minimus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 130. | FNA vol. 26, p. 128. |
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus |
Sibling taxa | ||
Synonyms | C. nudus var. shastensis, C. shastensis | |
Name authority | Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) | S. Watson: Proc. Amer. Acad. Arts 14: 263. (1879) |
Web links |