Calochortus howellii |
Calochortus argillosus |
|
---|---|---|
Howell's mariposa lily |
clay mariposa, clay mariposa lily |
|
Habit | Plants bulbose; bulb coat membranous. | |
Stems | slender, not branching or rarely branching in axil of cauline leaf, straight, 2–4 dm. |
not branching, 4–6 dm. |
Leaves | basal persistent, 20–35 cm; blade gradually tapering distally, adaxially pubescent. |
basal withering, 2–3 dm; blade linear. |
Inflorescences | subumbellate, 1–3-flowered; bracts 2, subopposite, linear to narrowly lanceolate, attenuate, 1–3 cm. |
subumbellate, 1–4-flowers; bracts 2–8 cm. |
Flowers | erect; perianth open, campanulate; sepals shorter than petals, ovate-acuminate, glabrous; petals yellowish white, with purplish hairs toward base, broadly obovate, cuneate, inconspicuously fringed laterally, sparingly short-hairy adaxially, apex rounded; glands transversely oblong, slightly depressed, densely covered with short, distally branching hairs, the bases of which unite at lower margin to form inconspicuous, discontinuous membranes; filaments shorter than anthers; anthers oblong-lanceolate, apex acute to short-apiculate. |
erect; perianth open, campanulate; sepals lanceolate, 2–4 cm, apex acute to acuminate; petals white to purple, with median red blotch often surrounded by pale yellow, obovate to cuneate, rounded, 2–4 cm, with a few short hairs near gland, apex retuse to obtuse; glands arched, transversely oblong to weakly lunate or ± rectangular, not depressed, densely covered with short hairs; filaments 7–9 mm; anthers lanceolate-linear to oblong, 8–10 mm, apex acute to obtuse. |
Capsules | erect, 3-winged, ellipsoid, ca. 2 cm, base and apex acute. |
erect, narrowly lanceoloid, stout, 4–6 cm. |
Seeds | light-colored, irregular. |
light beige, lanceolate, flat, 5–6 mm. |
2n | = 20. |
= 14. |
Calochortus howellii |
Calochortus argillosus |
|
Phenology | Flowering late spring–mid summer. | Flowering late spring–mid summer. |
Habitat | Dry, rocky, serpentine soils | Hard clay soil of volcanic or metamorphic rock |
Elevation | 300–500 m (1000–1600 ft) | 0–400 m (0–1300 ft) |
Distribution |
OR
|
CA
|
Discussion | Calochortus howellii is known only from the Illinois River valley, Josephine County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26, p. 129. | FNA vol. 26, p. 134. |
Parent taxa | Liliaceae > Calochortus | Liliaceae > Calochortus |
Sibling taxa | ||
Synonyms | Mariposa argillosa | |
Name authority | S. Watson: Proc. Amer. Acad. Arts 23: 266. (1888) | (Hoover) Zebell & P. L. Fiedler: Madroño 39: 306. (1992) |
Web links |