Allium perdulce |
Allium bolanderi |
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plains onion |
Bolander's onion |
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Bulbs | 2–20+, without basal bulbels, 1–2.5 × 1.2–2.8 cm; outer coats enclosing 1 or more bulbs, dark brown, reticulate, cells coarse-meshed, open, fibrous; inner coats whitish, cells regular, vertically elongate, walls not sinuous. |
1–6+, not basally clustered, replaced annually by new bulbs borne terminally on rhizomes; rhizomes 1–3, inconspicuous, slender, less than 2 cm including renewal bulb; parent bulbs disappearing by anthesis except for still-functional roots and bulb coat, oblique-ovoid to ± oblong, 0.7–1.4 × 0.5–1.2 cm; outer coats not enclosing bulbs, brown to gray-brown, ± obscurely reticulate, membranous, reticulum delicate, cells transversely elongate, V-shaped or ± wavy, forming obscure herringbone pattern, without fibers; inner coats white, cells obscure, quadrate to ± rectangular, often contorted. |
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Leaves | persistent, green at anthesis, 3–5, sheathing; blade solid, flat, channeled, 8–30 cm × 1–2(–3) mm, margins entire. |
persistent, withering from tip at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, subterete to ± channeled, 9–30 cm × 1–2 mm, margins entire. |
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Scape | persistent, solitary, erect, ± terete, 10–20 cm × 1–3 mm. |
persistent, solitary, erect, solid, terete, 10–35 cm × 1–3 mm. |
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Umbel | persistent, erect, loose, 5–25-flowered, hemispheric-globose, bulbils unknown; spathe bracts persistent, 2–3, 3–7-veined, ovate, ± equal, apex acuminate. |
persistent, erect, compact to loose, 10–20-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 4–6-veined, lanceolate to lance-ovate, ± equal, apex acuminate. |
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Flowers | urceolate, 7–10 mm; tepals erect, white or pale pink with deep pink midribs to deep rose, lanceolate, ± equal, becoming callous-keeled and permanently investing capsule, margins entire, apex obtuse or acute; stamens included; anthers yellow or purple; pollen yellow; ovary crestless; style linear, ± equaling stamens; stigma capitate, unlobed or obscurely lobed; pedicel 3–17 mm, ± 2 times perianth at anthesis, elongating in fruit. |
conic to campanulate, 7–14 mm; tepals erect, reddish purple, rarely white, narrowly lanceolate to lance-ovate, ± equal, becoming rigid and carinate in fruit, margins finely denticulate (inner tepal more prominently so), apex acute to obtuse, becoming involute at tip and appearing acuminate; stamens included; anthers yellow; pollen yellow; ovary crested; processes 3, central, 2-lobed, minute, margins entire; style linear, equaling stamens; stigma capitate, obscurely 3-lobed, scarcely thickened; pedicel 10–20 mm. |
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Seed | coat dull or shining; cells minutely roughened. |
coat dull; cells minutely roughened. |
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Allium perdulce |
Allium bolanderi |
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Distribution |
c North America
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CA; OR
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). The varieties of Allium bolanderi are extremely difficult to distinguish in the absence of bulb material. Care must be taken to obtain good bulb material whenever collecting Allium, but it is extremely critical in this species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 241. | FNA vol. 26, p. 259. | ||||||||
Parent taxa | ||||||||||
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Name authority | S. V. Fraser: Trans. Kansas Acad. Sci. 42: 124. (1940) | S. Watson: Proc. Amer. Acad. Arts 14: 229. (1879) | ||||||||
Web links |