130 LILIACEAE 
3. U. sessilifolia, L. (Fig. 6, pl. 12.) Sessme-LeEaAvep BeLiwort. 
(Oakesia sessilifolia, Wats.) Leaves narrowly oval or lance-shaped, not 
penetrated by the stem but half clasping it, 1 to 3 in. long. Flowers 
greenish-yellow. Ovary with 3 winged angles. Moist woods. May-June. 
TriseE IJ.—ALLIOIDEAE. On1on Trips 
Only a single species, Allium, native in our territory. 
ALLIUM, L. 
Herbs with a characteristic garlicky odor with leaves and flower stem 
springing from a bulb. Leaves mostly narrow and flat or hollow eylindrie 
tubes. Less frequently broader lance-shaped. Flowers terminal on an 
erect, generally cylindric, scape, in a rounded umbel which sometimes con- 
tains also small bulblets. Perianth of 6 segments, all colored. Seeds 
angular, black. 
Eeaves’ broads. lanceolate; <<. 74) (eye ews Ue: fe” (gs Nee tle ee One 
Leaves linear, flat. 
Heads containing both flowers and bulblets . . . A. canadense 
Heads with flowers only, heads nodding, stamens nearly twice the 
length: iotmeperanthic) is peat.) ie ycrciee eh nau ce fale ee tee nm Caer 
Leaves hollow tubes. 
Stamens, at least the inner 3, with a prolonged tooth or spine 
at each side extending above the anther ... . A. vineale 
Stamens simple, not furnished with spines . ... . ak Schoenoprasum 
1. A. tricoccum, Ait. Witp Leek. Leaves 6 to 12 in. long, disap- 
pearing before the flowers are developed. Flower stalk 4 to 14 ft. high. 
The two bracts subtending the umbel as long or longer than the pedicels 
of the flowers; falling early. Flowers white, filaments of the stamens 
flattened, as long as the petals. June-July. 
2. A. Schoenoprasum, L. Curves. Leaves as long as the flower 
stem, permanent. Bracts of the umbel broad, often partly enclosing the 
umbel after the opening of the flowers. Flowers forming a dense head, 
rose-colored, the flower longer than the pedicel. Stamens shorter than the 
petals. Moist soil, often cultivated. June-Aug. 
3. A. cernuum, Roth. Nopptnc Wuire Onion. Stem 4-angled, 1 
to 2 ft. high, leaves about as long, flat. Bracts below the umbel small 
and falling early. Flower umbel nodding. Rather dry localities, New 
York and westward. July-Aug. 
4. A. vineale, L. Witp Garric. Stem 1 to 3 ft. high, leaves few 
and shorter than the stem, cylindric, hollow. Umbel containing flowers 
or bulblets or both. Fields, Connecticut and westward. June-July. 
5. A. canadense, L. Merapow Gartic. Stem 1 to 2 ft. high; leaves 
linear, flat, shorter than flower stem; umbel bracts conspicuous, white, 
acute at apex. Flowers pink or white, often replaced by bulblets. Moist 
fields, throughout our area. May-June. 
Trise IJI.—LILIOIDEAE. Trur Lity TRIBE 
Flowers of the typical construction of the order; 6 petals, 6 stamens, 
1 pistil, ovary of 3 cells, above the stamens and free from them; stamens 
