Allium parvum |
Allium brevistylum |
|
|---|---|---|
|
dwarf onion, small onion |
short-style onion |
|
| Bulbs | 1–5+, not clustered on stout primary rhizome, rhizomes absent, renewal bulbs formed within coats of parent bulb, ovoid to ± globose, 1–2 × 0.7–2 cm; outer coats enclosing 1 or more bulbs, gray to grayish brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white or pinkish, cells obscure, ± quadrate. |
2–4, terminating thick, iris-like rhizome, elongate, 2–3 × 0.6–1 cm; outer coats enclosing single bulb, grayish or brownish, membranous, minutely striate, cells in parallel vertical rows, narrow, elongate, not fibrous-reticulate, fibers persistent, parallel, few, coarse; inner coats whitish, cells narrowly vertically elongate. |
| Leaves | usually deciduous with scape, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, ± falcate, 8–15 cm × 2–8 mm, margins entire. |
persistent, green at anthesis, 2–5, basally sheathing, sheaths not extending much above soil level; blade solid, flat, 10–40 cm × 2–8 mm, margins entire. |
| Scape | usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, flattened, frequently ± winged distally, or, in smaller specimens, ± terete, 3–12 cm × 0.5–2 mm. |
persistent, solitary, erect, solid, flattened and narrowly winged distally, 20–60 cm × 1.5–4 mm. |
| Umbel | persistent, erect, compact, 5–30-flowered, hemispheric to conic, bulbils unknown; spathe bracts persistent, 2, 12–14-veined, ovate, ± equal, apex acute to acuminate. |
persistent, erect, loose, 7–20-flowered, subhemispheric, bulbils unknown; spathe bracts persistent, 2, 3–5-veined, ovate, ± equal, apex acute. |
| Flowers | narrowly campanulate, 6–9 mm; tepals erect, ± spreading toward tips, white or tinged with pink, with broad, dark, reddish purple or brown midvein, oblong to elliptic, unequal, outer longer, wider than inner, becoming papery and investing capsule, not carinate in fruit, margins entire, apex obtuse to ± acute; stamens included; anthers purple or yellow; pollen yellow; ovary obscurely crested; processes 3, central, low, rounded, margins entire; style linear, ± equaling tepals; stigma capitate, scarcely thickened, unlobed or obscurely 3-lobed; pedicel 3–12 mm. |
narrowly urceolate, 10–13 mm; tepals erect, pink, lanceolate, ± equal, withering in fruit, margins entire, apex acuminate, midribs somewhat thickened; stamens included, ca. 1/2 as long as tepals; anthers yellow; pollen light yellow; ovary crestless; style linear, equaling stamens; stigma capitate, distinctly 3-lobed; pedicel 8–35 mm, elongating and becoming stout and curved in fruit. |
| Seed | coat dull; cells smooth. |
coat dull or shining; cells each with minute, central papilla, or obscurely and minutely roughened. |
| 2n | = 14. |
= 14. |
Allium parvum |
Allium brevistylum |
|
| Phenology | Flowering late Apr–Jun. | Flowering Jun–Aug. |
| Habitat | Rocky, clay slopes and talus | Swampy meadows and along streams, rarely on wooded slopes |
| Elevation | 1200–2800 m [3900–9200 ft] | 2200–3400 m [7200–11200 ft] |
| Distribution |
CA; ID; NV; OR; UT
|
CO; ID; MT; NM; UT; WY
|
| Discussion | Allium brevistylum is found only in the Rocky Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
| Parent taxa | ||
| Sibling taxa | ||
| Synonyms | A. modocense, A. pleianthum var. particolor, A. tribracteatum var. andersonii, A. tribracteatum var. parvum | |
| Name authority | Kellogg: Proc. Calif. Acad. Sci. 3: 54, fig. 13. (1863) | S. Watson: Botany (Fortieth Parallel), 350. (1871) |
| Source | FNA vol. 26. | FNA vol. 26, p. 246. |
| Web links | ||