LILIACEAE. 



Anthers fixed near the base, slightly if at all versatile; petals and sepals 

 obovate-oblanceolate, not clawed, in ours mottled ; nectary a shallow pit. 



3. FRITILLARIA. 



Bulb tunicated, anthers strictly basifixed. 



Leaves 2, basal or nearly so ; flowers nodding. 4. ERYTHRONIUM. 



Leaves several, alternate ; flowers not nodding. 5. LLOYDIA. 



i. LEUCOCRINUM Nutt. 



i. Leucocrinum montanum Nutt. In sandy soil from S. D. to Mont, and 

 Colo. Alt. 4000-6500 ft. Denver; headwaters of Clear Creek; Boulder; 

 Pike's Peak; Colorado Springs; Larimer County; New Windsor; Table 

 Rock; Howe's Gulch; gulch west of Dixon Canon; Spring Canon; bank of 

 Cache la Poudre River; Rist Canon; bluffs north of La Porte; hills west 

 of Soldier Canon; vicinity of Horsetooth Gulch; Boulder; Colorado City. 



2. LILIUM L. LILY. 



Leaves linear. i. L. umbellatum. 



Leaves lanceolate. 2. L. montanum. 



1. Lilium umbellatum Pursh. Hills, among bushes, from Hudson Bay to 

 B. C, Ky. and Colo. Baxter's ranch; Empire. 



2. Lilium montanum A. Nelson. On hills, among bushes, from Mont, to 

 Colo. Alt. 6500-10,000 ft. Crystal Park; West Spanish Peak; Hamor's 

 Lake, north of Durango; Larimer County; Long Gulch; Stove Prairie Hill; 

 Rist Canon; Laramie River, at Sherwood's. 



3. FRITILLARIA L. FRITILLARY, TIGER LILY. 



i. Fritillaria atropurpurea Nutt. On hillsides from N. Dak. to Ida., Colo, 

 and Calif. Alt. 4000-9500 ft. Poverty Ridge, near Cimarron; Lamb's ranch. 



4. ERYTHRONIUM. ADDER'S-TONGUE, DOG-TOOTH VIOLET. 



i. Erythronium parviflorum (S. Wats.) Gooding. (E. grandiflorum parvi- 

 Horum S. Wats.) On rich hillsides from Wyo. to Colo, and Utah. Alt. 

 8500-11,500 ft Cameron Pass; Bear Creek Divide; West La Plata Moun- 

 tains; North Park; Grand Mesa; mountain west of North Park; source of 

 Leroux ; Rabbit-Ears, Larimer Co. 



5. LLOYDIA Salisb. 



i. Lloydia serotina (L.) Sweet. In exposed alpine or arctic regions from 

 Mont, to Alaska and Colo.; also in the Old World. Alt. 10,000-14,000 ft 

 Crystal Lake; Arapahoe Peak; headwaters of Clear Creek; Red Mountain; 

 Saddle Cliff, Pike's Peak; Alpine Tunnel; Carson; West Spanish Peak; Mt. 

 Hesperus ; mountains above Graymont ; Franklin ; mountains northeast of 

 Boreas. 



Family 28. CONVALLARIACEAE Link. LILY-OF-THE-VALLEY FAMILY. 



Sepals and petals distinct. 



Flowers white, in terminal racemes or panicles ; anthers introrse, stem simple. 



i. VAGNERA. 



Flowers axillary or terminal, solitary or in small umbelliform clusters ; anthers 

 extrorse or opening laterally ; stem branched. 



