Tab. 6320. 
ALLIUM UNIFOLIUM. 
Native of California* 
Nat. Ord. LiLiACEAS.-^-Tribe Allieje. 
Genus Allium, Linn. (Regel, Alliorum Monographia : St. Petersburg , 1875.) 
Allium unifolium ; bulbis parvis longe rhizomatosis tunicis albidis membra- 
naceis, foliis linearibus glabris scapo brevioribus solitariis vel paucis, scapo 
tereti 1-2-pedali, umbellis densis 20-30-floris, spatlise vaivis duabus lanceolate- 
deltoideis pedicellis subaequilongis, pedicellis 9-12 lin. longis, periantliii 
rubri segmentis ovato-lanceolatis acutis 5-6 lin. longis flore expanso patulis, 
staminibus perianthio distincte brevioribus, filamentis subulatis conformibus, 
stylo elongato, ovulis in loculo geminis collateralibus erectis. 
A. unifolium, Kellogg in Proe. Calif. Acad. vol. ii. p. 112, tab. 35 ; S. Wats, in 
Rot. 40 Par all, p. 486, tab. 36, fig. 9-10 ; Regel, Alliorum Monog. p. 146. 
This is one of several handsome new Alliums which have 
lately been discovered in California. It is found in the vici- 
nity of Oakland, and about the bay of San Francisco. It was 
first named and described by Dr. Kellogg in 1861. It was 
afterwards found that name was not an appropriate one, the 
number of leaves not being a constant character. Of well- 
known old-world types it is most like Allium roseum in the 
flowers, but its underground structure is quite unique in this 
very large genus, so far as known, the bulbs being developed 
some distance from one another, and connected by a thread- 
like rhizome, like that of Lilium canadense. Our drawing 
was made from specimens which flowered with Messrs. Back- 
house and Son at Holgate, near York, in July, 1873. 
Descb. Bulbs small, ovoid, connected by a filiform rhizome ; 
outer tunics whitish, membranous, marked with fine parallel 
anastomosing waved lines. Leaves one, two or more, linear, 
glabrous, shorter than the scape, a foot or less long, a sixth 
to a quarter of an inch broad. Scape erect, terete, one or 
two feet long; umbel dense, 20-30-flowered, about two inches 
in diameter ; pedicels nine to twelve lines long ; spathe-valves 
SEPTEMBER 1ST, 1877. 
