Calochortus umpquaensis |
Calochortus weedii |
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Umpqua mariposa-lily |
foothill mariposa lily, Weed's mariposa, Weed's mariposa lily |
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Habit | Plants usually bulbose; bulb coat fibrous-reticulate. | |||||||||
Stems | not branching, straight, often scapelike, 2–3 dm, glabrous or glaucous. |
slender, usually branching, 3–9 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, 2–4 dm; blade linear to lanceolate. |
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Inflorescences | 2–6-flowered; bracts resembling distal cauline leaves. |
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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, broadly campanulate; sepals ovate to lanceolate, attenuate, 2–3 cm; petals orange-yellow, flecked, broadly cuneate or obovate, ca. 2–3 cm, adaxially bearded with long yellow hairs, margins often red-brown, dentate or fringed; glands round, slightly depressed, ± glabrous, surrounded by ring of long, dense, obscuring yellow hairs; filaments 8–12 mm; anthers lanceolate-oblong, apex acute. |
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Capsules | nodding, 3–5.4 cm. |
erect, linear, angled, 4–5 cm, apex acute. |
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Seeds | 2.8–3.5 mm, with inflated bulbous crest and hollow lateral ridge. |
light beige. |
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2n | = 20. |
= 18. |
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Calochortus umpquaensis |
Calochortus weedii |
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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; Mexico (Baja California)
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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 4 (3 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. 141. | ||||||||
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Fredricks: Syst. Bot. 14: 12, figs. 1, 2, 3f–j, 4, 5. (1989) | Alph. Wood: Proc. Acad. Nat. Sci. Philadelphia 20: 169. (1868) | ||||||||
Web links |