CONVALLARIACEAE. 85 



Ariz, — Alt. 7500-11,000 ft. — Chaparral-covered hills southeast of Ouray; 

 mountains about Ouray; near Pagosa Peak; Tunnel Mountain; gulch south 

 of Boulder ; foot-hills near Ft. Collins ; Big Creek Gulch, Routt Co. ; Eldora ; 

 Baltimore. 



4. SALOMONIA. 



1. Salomonia commutata (R. & S.) Britton. (Polygonatum giganteum 

 Dietr.) River banks and moist woods from R. I. to Utah, Ga. and Ariz. — 

 Locality not given. 



Family 29. DRACAENACEAE Link. Yucca Family. 



Flowers perfect, large; ovary many-ovuled and capsule many-seeded, i. Yucca. 

 Flowers polygamo-dioecious ; ovules 2 in each cell ; capsule often i-seeded. 



2. NOLINA. 



i. YUCCA. Yucca, Spanish Bayonet. 



Fruit a dry capsule. 



Leaves narrowly linear, very long; style swollen, green. x. F. glauca. 



Leaves linear-lanceolate, short ; style not swollen, white. 2. ¥. Harrimaniae. 



Fruit fleshy. 3. Y. baccata. 



1. Yucca glauca Nutt. (F. angustifolia Pursh.) On dry plains and hills 

 from Nebr. to Mont., Tex. and Ariz. — Alt. 4000-6000 ft. — Colorado Springs; 

 Walsenburg; near Boulder; Poudre flats, west of Ft. Collins. 



2. Yucca Harrimaniae Trelease. On arid plains and hills of Utah and 

 Western Colorado. — Alt. about 6500 ft. — Cimarron; Durango. 



3. Yucca baccata Torr. On arid plains from Colo, to Nev., Tex. to Calif. ; 

 also in Mex. — Alt. 4000-5500 ft. — ^Trinidad; hills south of Dolores; Durango. 



2. NOLINA Michx. 



J.. Nolina Greenei S. Wats. Dry mesas, Colo. — Alt. about 5000 ft.^ 

 Trinidad. 



Family 30. CALOCHORTACEAE Rydb. Mariposa Lily Family. 

 I. CALOCHORTTTS Pursh. Mariposa Lily, Sego Lily. 



Petals abruptly acuminate; glands oblong. i. C. acuminatus. 

 Petals rounded or merely acute at the apex. 



Anthers obtuse ; glands not broader than long. i. C. NuttalUi. 



Anthers acute; glands broader than long. 3. C. Gunnisonii. 



1. Calochortus acuminatus Rydb. On dry hills from Mont, to Colo, and 

 Utah.— Alt. about 6500 ft. — Mancos. 



2. Calochortus Nuttallii T. & G. On hillsides from Mont, to Colo, and 

 Calif. — Alt. 6000-7000 ft. — Cimarron. 



3. Calochortus Gunnisonii S. Wats. In meadows from Mont, to Colo, and 

 Ariz. — Alt. 5000-10,000 ft. — North Park, near Teller; Boulder; headwaters 

 of Clear Creek; Middle Park; Mancos; Como; Piedra; Veta Pass; Jack's 

 Cabin, Gunnison watershed; Yampa; Ruxton Dell, near Pike's Peak; La 

 Veta; Villa Grove; Table Rock; Four Mile Hill; Spring Canon; Horsetooth 

 Gulch; Brant's Soda Spring, near North Platte; Trinidad; Dixon Cation. 



