Calochortus umpquaensis |
Calochortus clavatus |
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Umpqua mariposa-lily |
club hair mariposa, clubhair mariposa lily, slender mariposa lily |
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Habit | Plants usually bulbose; bulb coat, when present, membranous. | |||||||||||||||||
Stems | not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous. |
slender or coarse, stout, branching or not, strongly flexuous, 3–10 dm. |
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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, 1–2 dm; blade linear. |
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Inflorescences | subumbellate, 1–6-flowered; bracts 4–8 cm, bases dilated. |
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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, cup-shaped; sepals usually with red-brown blotch at base, lanceolate-ovate, 2–4 cm, apex acute; petals lemon to golden yellow, with transverse line distal to gland, broadly cuneate to obovate, 3–5 cm; glands round, deeply depressed, densely covered with short hairs with branching, coralline tips, surrounded by conspicuously fringed membrane and club-shaped hairs; filaments ca. 10 mm; anthers purplish brown, oblong, 4–10 mm. |
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Capsules | nodding, 3–5.4 cm. |
erect, lanceoloid-linear, angled, 6–9 cm, apex acuminate. |
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Seeds | 2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge. |
light yellow, translucent, flat. |
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2n | = 20. |
= 16. |
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Calochortus umpquaensis |
Calochortus clavatus |
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Phenology | Flowering late spring–mid summer. | |||||||||||||||||
Habitat | Grassland-forest ecotones in serpentine-derived soils | |||||||||||||||||
Elevation | 300–500 m (1000–1600 ft) | |||||||||||||||||
Distribution |
OR
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CA
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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.) |
Varieties 5 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 130. | FNA vol. 26, p. 138. | ||||||||||||||||
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus | ||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Mariposa clavata | |||||||||||||||||
Name authority | Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) | S. Watson: Proc. Amer. Acad. Arts 14: 265. (1879) | ||||||||||||||||
Web links |