Allium oleraceum |
Allium nevadense |
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field garlic |
Nevada onion |
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Bulbs | 1 or more, not attached to rhizome, ovoid, 1.2–2 × 1–1.5 cm; outer coats enclosing bulbs, brown to grayish brown, fibrous, fibers close, ± parallel; inner coats white to light brown, not cellular. |
1–3, not clustered on stout, primary rhizome, with 0–2 stalked, basal bulbels, ovoid, 1–2 × 0.8–1.5 cm; outer coats enclosing 1 or more bulbs, brown, membranous, usually prominently cellular-reticulate, cells ± transversely elongate, intricately contorted, without fibers; inner coats white or pinkish, cells elongate, intricately contorted. |
Leaves | withering from tip by anthesis, 2–4, sheathing proximal 1/2+ scape; blade fistulose proximally, solid distally, terete, linear to filiform, prominently ribbed proximally, channeled distally, 1.5–2.5 cm × 0.5–5 mm, margins and veins usually scabrid with minute teeth, apex acute. |
persistent, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 10–20 cm × 1–3 mm. |
Scape | persistent, solitary, erect, terete, 25–100 cm × 4–8 mm. |
persistent, solitary, erect, ± solid, terete, 5–15 cm × 1–2.5 mm. |
Umbel | persistent, erect, compact to ± loose, 0–40-flowered, subglobose, with few to many bulbils or with bulbils only; spathe bracts persistent, 2, 4–9-veined, lanceolate, unequal, apex acuminate into beak, beak long, slender, to 20 cm, ± equaling or longer than base. |
persistent, erect, compact, 5–25-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2–3, 3–7-veined, ovate to lanceolate, ± equal, apex acuminate. |
Flowers | usually aborting before capsules mature, if present, campanulate, 6–8 mm; tepals erect, whitish or pinkish to purple, outer narrowly obovate, inner ± elliptic, unequal, margins entire, apex obtuse; stamens included; anthers yellow to reddish; pollen yellow; ovary crestless; style linear, equaling stamens; stigma capitate, unlobed; pedicel 15–60 mm. |
stellate, 7–12 mm; tepals spreading, white or pinkish white with dark pink midveins, lanceolate to ovate, ± equal, becoming papery in fruit, margins entire, apex acute to acuminate; stamens included; anthers purple; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins entire to notched or shallowly toothed; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 8–16 mm. |
Seed | coat unknown; capsules only rarely produced. |
coat dull; cells minutely roughened. |
2n | = 14, 28. |
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Allium oleraceum |
Allium nevadense |
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Phenology | Flowering late Jul–Aug. | Flowering Apr–Jun. |
Habitat | Roadsides and other disturbed ground | Sandy, rocky, or occasionally clay soils on desert plains and hillsides |
Elevation | 1400–1700 m (4600–5600 ft) | |
Distribution |
Europe [Introduced in North America] |
AZ; CA; CO; ID; NV; OR; UT
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Discussion | Allium oleraceum is reported from New England, where it is sometimes found on roadsides and other disturbed ground. It persists and is spread easily by the bulbils. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 26, p. 238. | FNA vol. 26, p. 248. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. nevadense var. macropetalum | |
Name authority | Linnaeus: Sp. Pl. 1: 299. (1753) | S. Watson: Botany (Fortieth Parallel), 351, plate 38, figs. 1–3. (1871) |
Web links |