82 CONVALLARIACEAE. 



3. Allium recurvatum Rydb. (A. cernuum of Coulter's Man., mainly.) On 

 banks and hillsides from the Black Hills of S. D. to B. C. and N. M. Alt 

 5000-8500 ft. Colorado Springs; Cheyenne Mountain; Pike's Peak; Gunni- 

 son ; Garden of the Gods ; North Cheyenne Canon ; Engelmann Canon ; Par- 

 lin, Gunnison County; Minnehaha; Yampa; Villa Grove; Cerro Summit; 

 Larimer County; mountains between Sunshine and Ward; Howe's Gulch; 

 Redstone; Poudre Canon; Clear Creek bottoms, below Georgetown; Em- 

 pire. 



4. Allium neo-mexicanum Rydb. In rocky places of Colo., N. M. and Ariz. 

 Headwaters of Clear Creek. 



5. Allium cernuum Roth. In rich, rocky soil from N. Y. to Sask., Mont., 

 W. Va. and Colo., but very rare in the Rocky Mountain region. Pagosa 

 Springs. 



6. Allium rubrum Osterhout. In rich ground from Colorado and Wyo- 

 ming. North Park, Continental Divide; in pastures along Walton Creek. 



7. Allium Nuttallii S. Wats. In dry, rocky or sandy plains from S. D. to 

 Wyo., Kans. and Colo. Alt. 4000-6000 ft. Colorado Springs; Denver; south- 

 west of Ward, Boulder County. 



8. Allium macropetalum Rydb. In the mountains of Colo. Palisades. 



9. Allium Geyeri S. Wats. (A. dictyotum Greene; A. reticulatum deser- 

 ticola Jones.) In dry soil and hillsides from N. D. to Wash, and N. M. 

 Alt. 5000-11,500 ft. Upper La Plata Canon; Indian Creek Pass; Pagosa 

 Springs; near Ironton; Mt. Abram; Red Mountain road, near Ouray; Ci- 

 marron; Swallows, between Pueblo and Canon City; Dixon Canon; Ft. Col- 

 lins; mountains above Manitou; Como and vicinity; gulch west of Pen- 

 nock's ; Spring Canon ; Moon's ranch ; Dillon Canon ; Medicine Bow Moun- 

 tains. 



10. Allium reticulatum Fraser. In dry, gravelly soil from Sask. to Idaho, 

 Colo, and Utah. Alt. 5000-8500 ft. Mesas near Pueblo; La Veta; Aztec; 

 Arboles; South Park; Soldier Canon; Horsetooth Mountain; Quimby; 

 Horsetooth Gulch. 



11. Allium Pikeanum Rydb. In rocky places in Colo. Alt. 11,000-13,000 

 ft. Pike's Peak: near Halfway House; Bald Mountain; Peak Valley. 



12. Allium acuminatum Hook. In dry soil from Mont, to B. C., Col., 

 Ariz, and Ore. Alt. 6500-8500 ft. Mancos; Cerro Summit; Honnold; Du- 

 rango; Dolores. 



13. Allium Brandegei S. Wats. From Ida. to Wash., Colo, and Ore. Elk 

 Mountains; Steamboat Springs; Rabbit-Ear Range, Routt Co. 



Family 27. LILIACEAE Adans. LILY FAMILY. 



Plant with a short rootstock ; flowers subumbellate on subterranian pedicels from 

 the crown of the rootstock ; petals and sepals united into a long tube. 



i. LEUCOCRINUM. 

 Plant with bulbs or corms, either leafy-stemmed or scapiferous ; petals and sepals 



distinct or nearly so. 

 Bulb scaly ; plant tall, leafy. 



Anthers versatile ; petals and sepals oblanceolate, clawed with a linear nec- 

 tariferous groove. 2. LILIUM. 



