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Allium lacunosum

Allium lacunosum S. Watson  
Family: Amaryllidaceae
Pitted Onion
Allium lacunosum image
  • FNA
  • Resources
Dale W. McNeal Jr. & T. D. Jacobsen in Flora of North America (vol. 26)
Bulbs 1-3(-5), not clustered on stout primary rhizome, ovoid, 1-2 × 1-2 cm; outer coats enclosing 1 or more bulbs, brown, prominently cellular-reticulate, membranous, accumulating and investing bulb with thick cover, cells square, polygonal, or ± transversely elongate, walls thick, sinuous, without fibers; inner coats white to light brown, cells ± obscure, quadrate. Leaves persistent, withering from tip at anthesis, 2-3, basally sheathing, sheaths not extending much above soil surface; blade solid, flattened, subterete or ± channeled and carinate, ± falcate, 10-30 cm × 0.5-3 mm, margins entire. Scape persistent, solitary, erect, solid, terete, 10-35 cm × 1-4 mm. Umbel persistent, erect, compact or loose, 5-45-flowered, bulbils unknown, umbel shattering after seeds mature, each flower deciduous with its pedicel; spathe bracts persistent, 2-3, 4-6-veined, lance-ovate to ovate, ± equal, apex obtuse or acuminate. Flowers campanulate, 4-9 mm; tepals erect or spreading from base, white to deep pink with darker midveins, lance-ovate to ovate, ± equal, margins entire, apex obtuse, acute, or short-acuminate; stamens included; anthers yellow; pollen yellow; ovary 3-grooved with ridge on either side of each groove, ridges prolonged into crest, ridges and crest densely covered with minute, rounded papillae; processes 3, central, 2-lobed, minute; style linear, equaling stamens; stigma capitate, scarcely thickened, obscurely 3-lobed; pedicel 4-30 mm. Seed coat dull or shining; cells minutely roughened.
Allium lacunosum
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