Allium stellatum |
Allium membranaceum |
|
---|---|---|
autumn onion, prairie onion |
papery onion |
|
Bulbs | 1–5+, usually clustered, often short-rhizomatous at base, rhizome not stout or iris-like, ovoid, 2–4 × 1–2.5 cm; outer coats enclosing 1 or more bulbs, grayish or brownish, membranous, fibers parallel, few, or sometimes reticulate, cells obscure, finely meshed; inner coats whitish to pinkish, cells obscure, ± quadrate. |
1–3, producing bulbels in basal cluster around roots, ovoid, 1–1.6 × 0.9–1.4 cm; outer coats enclosing 1 or more bulbs, brown, membranous, obscurely cellular-reticulate, cells quadrate, walls very sinuous, without fibers; inner coats white or pink, cells obscure, quadrate. |
Leaves | persistent, green at anthesis, 3–5, basally sheathing, sheaths never extending much above soil level; blade solid, flat, channeled, 14–35 cm × 1–5 mm, margins ± entire. |
persistent, green at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, 15–40 cm × 3–5 mm, margins entire. |
Scape | persistent, solitary, erect, or, if nodding at anthesis, becoming erect, solid, terete or ± 4-angled, particularly distally, 20–50 cm × 1–3.5 mm. |
persistent, solitary, erect, solid, terete, 15–40 cm × 1–3 mm. |
Umbel | persistent, nodding, becoming erect, ± loose, 9–40-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 2–4-veined, lanceolate, ± equal, apex acuminate. |
persistent, erect, loose, 15–35-flowered, ± globose, bulbils unknown; spathe bracts persistent, 2, 4–6-veined, lanceolate, ± equal, apex acuminate, setaceous. |
Flowers | stellate, 5–8 mm; tepals spreading, deep pink, elliptic-lanceolate, ± equal, withering in fruit, margins entire, apex acute, midribs not thickened; stamens exserted; anthers yellow; pollen yellow; ovary conspicuously crested; processes 6, distinct, flattened, ± triangular, margins entire or toothed; style exserted, linear, ± equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 0–20 mm. |
stellate, 7–12 mm; tepals spreading, pink or less commonly white, ovate to elliptic, ± equal, becoming papery in fruit, not carinate, margins entire, apex acute to acuminate, not involute; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, central, triangular, short, margins minutely denticulate; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–20 mm. |
Seed | coat dull; cells minutely roughened. |
coat dull; cells each with minute, central papilla. |
2n | = 14. |
= 14. |
Allium stellatum |
Allium membranaceum |
|
Phenology | Flowering Jul–Oct. | Flowering May–Jun. |
Habitat | Often on calcareous soils | Wooded, shady slopes |
Elevation | 300–2200 m (1000–7200 ft) | 200–1400 m (700–4600 ft) |
Distribution |
AR; IA; IL; KS; MI; MN; MO; ND; NE; OK; SD; TN; TX; WI; MB; ON; SK
|
CA |
Discussion | Allium membranaceum is found in the foothills of the northern and central Sierra Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26. | FNA vol. 26, p. 256. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Ker Gawler: Bot. Mag. 38: plate 1576. (1813) | Ownbey ex Traub: Pl. Life 28: 63. (1972) |
Web links |