Calochortus umpquaensis |
Calochortus monanthus |
|
---|---|---|
Umpqua mariposa-lily |
Shasta River mariposa lily, single-flower mariposa-lily |
|
Habit | Plants bulbose; bulb coat membranous. | |
Stems | not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous. |
not branching, straight. |
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 withering; blade linear-attenuate. |
Inflorescences | 1-flowered, long-peduncled; bracts opposite. |
|
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, turbinate to campanulate; sepals lanceolate, attenuate, ca. 4 cm; petals pinkish, with chevron-shaped, dark red blotch distal to gland, obovate, cuneate, rounded, ca. 5 cm, with few flexible hairs near gland, margins irregularly dentate distally; glands oblong, not depressed, densely covered with slender, unbranched hairs; filaments lanceolate-linear, shorter than anthers; anthers short-tipped. |
Capsules | nodding, 3–5.4 cm. |
erect, linear, angled. |
Seeds | 2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge. |
unknown. |
2n | = 20. |
|
Calochortus umpquaensis |
Calochortus monanthus |
|
Phenology | Flowering late spring–mid summer. | Flowering late spring–mid summer. |
Habitat | Grassland-forest ecotones in serpentine-derived soils | Vernal meadows |
Elevation | 300–500 m (1000–1600 ft) | 800 m (2600 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 monanthus is known only from a single collection from meadow along the Shasta River, near Yreka, Siskiyou County, by E. L. Greene in June, 1876. It is presumed extinct. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 130. | FNA vol. 26, p. 133. |
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus |
Sibling taxa | ||
Name authority | Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) | Ownbey: Ann. Missouri Bot. Gard. 27: 465, plate 39, figs. 3, 4. (1940) |
Web links |