MELANTHACEAE. 
77 
pine; Ruxton Park; Minnehaha; Mount Garfield; mountains above Gray- 
mont; Medicine Bow Mountain; Silverton. 
2. Anticlea coloradensis Rydb. In the mountains from Colo, to Utah and 
N. M.—Alt. 8500-12,000 ft.—Idaho Springs; Leroux Creek; Mt. La Plata; 
Marshall Pass; Steamboat Springs; Estes Park; Middle Park; Pike’s Peak; 
high mountains about Empire; divide between Arkansas River and Bayou 
Salade; foot-hills, Larimer Co.; above Beaver Creek; Rist Canon; bank 
of the Michigan; Gore Pass; Stove Prairie Hill; Redstone; Baxter’s ranch; 
Buffalo Pass; Medicine Bow Mountains. 
3. TOXICOSCORDION Rydb. Poison Camass, Death Camass, Hogs’ 
Potato. 
Petals and sepals rounded or obtuse at the apex; leaves 3-5 mm. wide. 
1. T. gramineum. 
Petals and sepals acute at the apex; leaves over 5 mm. wide. 2. T. falcatum. 
1. Toxicoscordion gramineum Rydb. ( Zygadenus venenosus Wats., in part.) 
Gravelly hillsides from Sask. to Ida. and Colo.—Alt. 5000-7000 ft.—Howe’s 
Gulch. 
2. Toxicoscordion falcatum Rydb. ( Zygadenus Nuttallii Coulter, in part; 
not A. Gray.) Hills and mesas of Colorado.—Alt. 5000-7500 ft.—Fort Col¬ 
lins; La Veta; Walsenburg; Los Pinos; Denver; Spring Canon near Cal¬ 
loway Ranch; Palmer Lake; Boulder. 
Family 25. JUNCACEAE Vent. Rush Family. 
Leaf-sheaths open; capsules 1- or 3-celled, with axial or parietal placentae; seeds 
many. 1. Juncus. 
Leaf-sheaths closed; capsule i-celled, with basal placentae; seeds 3. 
2. JUNCOIDES 
i. JUNCUS L. Rushes. 
I. Lower bracts of the inflorescence terete, erect, appearing like a continuation 
of the stem; inflorescence therefore apparently lateral. 
A. Flowers several in a more or less compound panicle; seeds apiculate 
(Effusi). 
Stem light-green, striate when dry, on account of the free hypodermal fibro- 
vascular bundles; sepals and petals green; stamens 3. 
1. /. dliformis. 
Stem dark-green or at the base purplish, not striate; sepals and petals dark 
purplish-brown ; stamens 6. 
Inflorescence congested ; branches 1-3 cm. long; petals and sepals acute or 
short-acuminate, almost equal in length. 2. /. balticus montanus. 
Inflorescence open ; branches 4-8 cm. long; sepals long-acuminate and much 
exceeding the acute petals. 3. /. balticus vallicola. 
B. Flowers 1-5, of which one is subsessile and the others pediceled (Subtri- 
FLORl). 
Upper sheath merely bristle-pointed; petals and sepals with green backs and 
dark-brown margins. 4. /. Drummondii. 
Upper sheaths leaf-bearing; green backs of the petals and sepals less prominent. 
Sepals and petals linear-lanceolate, light-brown ; capsule acute. 
5. /. Parryi. 
Sepals and petals broadly lanceolate, very dark-brown; capsule retuse. 
6 . /. Hallii. 
II. Lower bracts not appearing as a continuation of the stem, or if so channeled 
on the upper side; inflorescence terminal. 
