Dale W. McNeal Jr. & T. D. Jacobsen in Flora of North America (vol. 26)
Bulbs 1-5+, not clustered on stout primary rhizome, increase bulbs absent or ± equaling parent bulbs, never appearing as basal cluster, ovoid to ± globose, 0.8-1.2 × 0.7-1.2 cm; outer coats enclosing 1 or more bulbs, gray to gray-brown, prominently cellular-reticulate, membranous, cells arranged in ± vertical rows, forming irregular herringbone pattern, transversely elongate, wavy, V-shaped, without fibers; inner coats white, cells obscure, ± quadrate. Leaves persistent, withering from tip by anthesis, 2, basally sheathing, sheaths not extending much above soil level; blades solid, subterete, 3-20 cm × 0.5-1 mm, margins entire. Scape persistent, solitary, erect, solid, terete, (3-)5-15 (-17) cm × 0.5-2 mm. Umbel persistent, erect, compact, 4-15-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 3-5-veined, broadly ovate, ± equal, apex mucronate. Flowers campanulate, 5-7 mm; tepals erect, white to pale pink, lanceolate to lance-ovate, ± equal, becoming papery in fruit and remaining erect, margins entire, apex acute or obtuse, becoming ± involute at tip and appearing short-acuminate; stamens included; anthers white; pollen white; ovary crested or crestless; processes 3, central, rounded, very minute, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 4-12 mm. Seed coat dull; cells minutely roughened. 2n = 14. Flowering Mar--May. Grassy, wooded slopes and flats; of conservation concern; 0--50 m; Calif. Allium hickmanii is a rare endemic of the Monterey Peninsula and Arroyo de la Cruz.
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