272 LJLJACEAE 



Perianth-segments ovate-lanceolate, acute to acuminate; stamens % to % as long as, or some- 

 times equaling, the segments. 



Ovary crests consisting of a curved ridge; bulb-coats mostly with faint reticulation; north- 

 ern Sierra Nevada. 



Filaments dilated at base but distinct 24. A. anceps. 



Filaments united by thin dilated bases into a sort of cup 25. A. modocense. 



Ovary with ridges of the lobes produced above into prominent crests; filaments distinct; 

 bulb coats not reticulated; Coast Ranges. 



Umbels loose (pedicels 6 to 13 lines long) 26. A. falcifolium. 



Umbels more compact (pedicels 4 to 7 lines long) 27. A. breweri. 



1. A. validum Wats. SWAMP ONION. Scape stout, 2-edged above, 3 to 6 

 lines in diameter, l 1 /^ to 3 (or 3%) feet high; bulb */ to 1*4 inches thick and 

 li/o to 2 times as long, crowning a very stout rootstock ; roots thick and coarse ; 

 bulb-coats white to light reddish-brown, prominently ribbed, continuous with 

 the broad leaves, these 4 to 6 lines wide, 1 to 2 (or 3) feet long; perianth-segments 

 3 to 6 lines long, lanceolate-acuminate, rose-color to nearly white; stamens and 

 style usually exserted; capsule large, subglobose, not crested. 



Wet meadows, Sierra Nevada north to Siskiyou Co., thence southerly to 

 Trinity Co. ; 4000 to 9000 feet. Common. Also in Oregon. 



Locs. Garfield Forest, Sequoia Park, Jepson 4661; Farewell Gap, Jepson 1145; Lake 

 Merced, Yosemite Park, Jepson 3214; Kennedy Mdws., A. L. Grant 178; Silver Lake, Amador 

 Co., Mulliken 139; Suzy Lake, El Dorado Co., Jepson 8184; Donner Lake ; Sonne; Warner Mts., 

 L. S. Smith 1131; Cedar Spr., Mt. Shasta, Jepson; Shackclford Creek, w. Siskiyou Co., Butler 

 112; Twin Lakes, Trinity Co., Eastwood. 



Eef. ALLIUM VALIDUM Wats, Bot. King, 350 (1871), type loc. Mono Pass, Bolander 6248. 



2. A. haematochiton Wats. Scape stout, flexuous, 7 to 12 inches high ; bulb 

 elongated-ovoid, ^2 to % inch broad, its coats usually deep red, rarely pale pink ; 

 leaves many, abruptly narrowing or filiform above the broad sheaths; pedicels 

 numerous, i/4 to 1 inch long; perianth-segments deep rose-color (or often nearly 

 white) with darker midnerve, broadly ovate-acute, 3 to 4 lines long; filaments 

 % as long as the perianth-segments, narrowly subulate, with adnate deltoid bases ; 

 ovary white, truncate with very short rounded or undulate dark red crests. 



Dry hills and mountain slopes from San Luis Obispo Co. to San Diego Co. 



Locs. San Luis Obispo, Summers; Lockwood Valley, Mt. Pinos, Hall 6333; Banning, 

 E. J. Smith 300; Strawberry Valley, San Jacinto Mts., Hall 2096; Palomar, Jepson 1487; 

 La Mesa, San Diego Co., Jepson 6679. 



Refs. ALLIUM HAEMATOCHITON Wats. Proc. Am. Acad. 14:227 (1879), type loc. San Luis 

 Obispo, Brewer 462; Abrams, Fl. Los Ang. 84 (1904). 



3. A. unifolium Kell. Scape stout, 1 to 2 feet high, rising from a deeply 

 seated short horizontal rootstock bearing one or a few corms, only the rootstock 

 or base of scape rooting; reticulation of corm coats irregular to vertical undu- 

 late; leaves 4 or 3; bracts 2, large, acuminate, membranous; umbels 10 to 30- 

 flowered, the pedicels 1 to l l /o inches long; flowers lavender-pink; segments 

 broadly oblong-ovate, 5 to 7 lines long, % longer than the stamens and style; 

 ovary not crested, but with quadratish lobes. 



Kich moist lands in the valleys or open hills : Coast Ranges, 20 to 400 feet, 

 from Monterey Co. north to Humboldt Co. Local. 



Biol. Note. The stem arises from a conn which through exhaustion becomes a rootstock 

 as is evidenced by the husk of the former corm which for a time surrounds it. The rootstoek 

 sends out two prongs in opposite directions or nearly, each developing a corm. Apparently 

 these new corms become independent the next season, each sends up a stem, and at the same 

 time develops two new corms as the parent corm becomes depleted. 



Locs. Pacific Grove, Heller 6845; Mt. Diablo, Jepson 7588; Berkeley and Mt. Tamalpais, 

 aco. Behr; Conn Valley, Napa Co., Jepson; Ft. Bragg, W. C. Mathews 51; White Thorn Valley, 

 Mattole River, Tracy 5004; Eureka, Tracy 4078. 



Eefs. ALLIUM UNIFOLIUM Kell. Proc. Cal. Acad. 2:112, f. 35 (1863), type loc. Oakland; 

 Wats. Bot. King, 486, pi. 36, figs. 9-10 (1871); Baker, Bot. Mag. t. 6320, figs. 1-4 (1877); 

 Behr, Fl. Vic. S. F. 287 (1888) ; Jepson, Fl. W. Mid. Cal. 119 (1901). Var. LACTEUM Greene. 

 Pitt. 2:55 (1890), type loc. San Luis Obispo Co., Lemmon. Stouter and more succulent; 

 perianth white. Ex. char. 



