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 tuolumnense
(Ownbey & Aase) S. Denison & McNeal
(redirected from:
Allium sanbornii var. toulumnense
Ownbey & Aase)
Family:
Amaryllidaceae
Rawhide Hill Onion
[
Allium sanbornii var. toulumnense
Ownbey & Aase]
FNA
Resources
Dale W. McNeal Jr. & T. D. Jacobsen in Flora of North America (vol. 26)
Bulbs usually solitary, not clustered on stout, primary rhizomes, ovoid, 1.3-2 × 1.4-2 cm; outer coats enclosing single bulb, dark reddish brown, membranous, lacking cellular reticulation or cells arranged in only 2-3 rows distal to roots, ± quadrate, without fibers; inner coats light brown, cells obscure, quadrate. Leaves persistent, withering from tip by anthesis, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 30-55 cm × 2-4 mm. Scape persistent, solitary, erect, solid, terete, 25-50 cm × 2-4 mm. Umbel persistent, erect, compact, 20-60-flowered, hemispheric, bulbils unknown; spathe bracts persistent, usually 3, 7-8-veined, ovate, ± equal, apex attenuate. Flowers saucer-shaped, 6-8 mm; tepals spreading from base, white or flushed with pink, broadly ovate, ± equal, becoming papery in fruit, margins entire, apex obtuse to nearly round, not recurved at tip; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins laciniate; style linear, equaling stamens; stigma capitate, 3-lobed, lobes slender, recurved; pedicel 7-20 mm. Seed coat dull; cells minutely roughened. 2n = 14.
Flowering Mar--May. Serpentine soil on open hillsides; of conservation concern; 400--600 m; Calif.
Allium tuolumnense is known only from the foothills of the central Sierra Nevada, Rawhide Hill and Red Hills.
Open Interactive Map
Click to Display
8 Total Images