Liliaceae 99 
LEUCOCRINUM 
Low, perennial, acaulescent, with short rootstocks. Leaves narrow, surrounded at 
base by scarious btacts. Flowers white, in a sessile umbel, pedicels and ovaries under- 
ground and sheathed by floral bracts. Perianth salverform, persistent; segments several- 
veined, united. Stamens 6, on the perianth; anthers attached near base. Ovary sessile, 
ovate-oblong; style persistent, filiform-tubular, tip 3-lobed; ovules several in each 
cell. Capsule triangular-obovate. Seeds obovate, strongly angled, black. (Gk. leukos—= 
white, krinon=a lily; the white flower is Lily-like.)  E. 
L. montanum Nutt. 
ALLIUM ONION 
Perennial, mostly with coated bulbs, with onion-like odor; stems scapose. Leaves 
basal, linear or lanceolate. Flowers in a simple terminal umbel; pedicels not jointed. 
Perianth-segments nearly equal, distinct, lanceolate to linear, more or less spreading, 
|-veined, more or less gibbous at base, subtended by 2—-3 bracts; the bracts membran- 
ous, united or distinct. Stamens 6, on the base of the perianth; anthers versatile. Ovary 
sessile, subglobose, deeply 3-lobed; cells I- to several-ovuled; style filiform. Capsule 
obtusely 3-lobed. Seed obovoid, wrinkled, black. (A Latin name for Garlic.) 
A.  Perianth-segments acute or blunter. 
B.  Perianth shorter than the stamens; bulb-coat not reticulate. W. C. 
A. cernuum Roth 
BB.  Perianth longer than the stamens. 
C. Perianth twice as long as the stamens. 
D. Ovary plainly 6-crested at the summit; bulb-coat not reticulate. W. E. 
A. crenulatum Weis. 
DD. Ovary obscurely crested or ridged. 
E. Bulb-coat reticulate; umbel nodding; flowers white; perianth 8 mm. long. 
Ba A. collinum Doug]. 
EE. Bulb-coat not reticulate; umbel not nodding; flowers red or white; 
perianth 10 mm. long. E. 
A. tolmiei Bak. 
CC. Perianth 114% times as long as the stamens or shorter; bulb-coat reticulate 
in some species. 
F. Leaves longer than the scape; perianth-segments acute or obtuse, not apicu- 
late; bulb ovoid. 
G. Spathe of 2 bracts. 
H. Leaves about 4 mm. wide; bracts of the spathe acuminate ; pedicels 
8—16 mm. long; perianth-segments acute, entire. E. 
A. watsoni How. 
HH. Leaves less than 2 mm. wide; bracts of the spathe acute; pedicels 
2—4 mm. long; perianth-segments obtuse, delicately denticulate. E. 
A. simillimum Hend. 
GG. Spathe of 3 bracts. U. 
A. tribracteatum Torr. 
FF. Leaves shorter than the scape; perianth-segments acute or apiculate. 
I. Perianth-segments entire, not cuspidate. 
J. Bulb ovoid; bulb-coat not fibrous; scape {2 dm. high; bracts of the 
spathe 8—10 mm. long, acute. E. 
A. madidum Wats. 
