Allium scilloides |
Allium diabolense |
|
---|---|---|
fragile onion, scilla-like onion |
Diablo onion, serpentine onion |
|
Bulbs | 1–5, not clustered on stout, primary rhizome, increase bulbs ± equaling parent bulbs, never appearing as basal cluster, rhizomes absent, globose to ovoid, 1–2 cm × 8–20 mm; outer coats enclosing renewal bulbs, reddish or brownish, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white or light brown, cells absent or obscure and ± quadrate. |
1–3, not clustered on stout, primary rhizomes, ovoid to ± globose, 1–1.6 × 0.9–1.6 cm; outer coats enclosing 1 or more bulbs, reddish brown, membranous, lacking cellular reticulation or cells arranged in 2–3 rows proximal to roots, ± quadrate, without fibers; inner coats pale brown to white, cells obscure, quadrate. |
Leaves | deciduous with scape after seeds mature, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, falcate, 6–15 cm × 2–4 mm, margins entire or obscurely papillose. |
persistent, withering from apex by anthesis, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 10–30(–40) cm × 1–3 mm. |
Scape | usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, strongly flattened, 2-edged or winged distally, wings obscurely papillose, 4–8 cm × 1–3 mm. |
persistent, solitary, erect, solid, terete, 7–20(–30) cm × 1–3 mm. |
Umbel | decisuous with scape, erect, compact, 5–12-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2–3, 3-veined, broadly ovate, ± equal, apex acute. |
persistent, erect, compact to ± loose, 10–50-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2–3, 8–10-veined, lanceolate, ± equal, apex acuminate to long-acuminate. |
Flowers | campanulate, 6–8 mm; tepals erect, white or pinkish with green midribs, becoming reddish purple, broadly elliptic-oblong, ± equal, becoming rigid, papery and ± connivent over fruit, margins entire, apex obtuse, not involute at tip; stamens included; anthers purple; pollen white to gray; ovary crestless or obscurely crested; processes 3, central, rounded, margins entire; style linear, equaling stamens; stigma capitate, unlobed or minutely 3-lobed; pedicel 2–10.5(–18.5 in fruit) mm. |
campanulate, 6–10 mm; tepals erect, white or tinged pink with dark red midveins, lanceolate to ovate, ± equal, becoming papery in fruit, margins entire, apex obtuse to acute or apiculate, not conspicuously recurved at tip; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins erose to ± laciniate; style linear, equaling stamens; stigma capitate, 3-lobed, lobes slender, recurved; pedicel 7–20 mm. |
Seed | coat dull; cells smooth. |
coat dull; cells minutely roughened. |
2n | = 14. |
= 14. |
Allium scilloides |
Allium diabolense |
|
Phenology | Flowering Mar–Apr. | Flowering mid Apr–Jun. |
Habitat | Barren, gravelly soils, arid interior slopes and ridges well back from Columbia River | Serpentine clay soils |
Elevation | 300–1300 m (1000–4300 ft) | 500–1500 m (1600–4900 ft) |
Distribution |
WA
|
CA |
Discussion | Of conservation concern. Allium scilloides is known only from east of the Cascades. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium diabolense is known only from the southern Coast Ranges and western Transverse Ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 275. | FNA vol. 26. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. fimbriatum var. diabolense | |
Name authority | Douglas ex S. Watson: Proc. Amer. Acad. Arts 14: 229. (1879) | (Ownbey & Aase ex Traub) McNeal: Aliso 13: 425. (1992) |
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