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. 



I, 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. XOLIN.X. 



I. YUCCA. Yucca, Spanish Bayonet. 



Fruit a dry capsule. 



Leaves narrowly linear, very long; style swollen, green. i. Y. glauca. 



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



Fruit fleshy. .3- Y- baccata. 



1. Yucca glauca Nutt. {¥. 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, w^est 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 Alichx. 



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

 Trinidad. 



Family 30. CALOCHORTACEAE Rydb. Mariposa Lily Family. 



I. CALOCHORTUS 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. 2. C. Nuttallii. 



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



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 Caiion ; Horsetooth 

 (Inlch; Brant's Soda Spring, near North Platte; Trinidad; Dixon Canon. 



