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. NOLINA. 

 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. (Y. 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. 



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. 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 Canon. 



