Log In
New Account
Sitemap
Home
Fauna Database
Search Collections
Map Search
Image Search
Browse Images
Inventories
Sky Island Provinces
MABA Inventory Sites
Interactive Tools
Dynamic Checklist
Dynamic Key
Allium obtusum
Lemmon
Family:
Amaryllidaceae
Red Sierran Onion
Steve Buckley
FNA
Resources
Dale W. McNeal Jr. & T. D. Jacobsen in Flora of North America (vol. 26)
Bulbs 1-5, not clustered on stout primary rhizome, ovoid, 1-2 × 0.8-1.8 cm; outer coats enclosing 1 or more bulbs, brown, membranous, cellular-reticulate, cells quadrate, polygonal, or ± rectangular, ± transversely elongate, without fibers; inner coats white, reticulation absent or cells obscure, ± quadrate. Leaves usually deciduous with scape, withering from tip at anthesis, 1-2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat or broadly channeled, ± falcate, 5-22 cm × 0.5-14 mm, margins entire. Scape usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, terete, 2-17 cm × 0.5-2 mm. Umbel persistent, erect, compact, 6-65-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2-3(-5), 5-8-veined, ovate, ± equal, apex abruptly acuminate to apiculate. Flowers campanulate, 4-12 mm; tepals erect, white or pink with dark purplish midveins, lanceolate to oblong-elliptic, ± equal, becoming papery in fruit, margins entire, apex obtuse to acute; stamens included; anthers yellow or purple; pollen yellow; ovary crested; processes 3, obscure to ± prominent, rounded, central, margins entire; style linear, equaling stamens or longer; stigma capitate, scarcely thickened, obscurely 3-lobed; pedicel 2-14(-20) mm. Seed coat dull; cells ± smooth.
Allium obtusum is known only from the Sierra Nevada.
Open Interactive Map
Click to Display
91 Total Images