Family LILIACEA 19 
Low herbs; anthers attached at the base, not versatile. 
6. Fritillaria. 
Stems with 2 leaves at the base; flowers solitary. 
7. Erythronium. 
Plants without bulbs or corms, often with root-stocks. 
Leaves basal; root-stock short and erect or none. 
Plants with a single flower. 2. Leucocrinum. 
Plants with many fiowers; leaves evergreen. 9. Yucca. 
Stems leafy; root-stocks horizontal, elongated. 
Real leaves scaly, apparent leaves filiform branches. 
10. Asparagus. 
Leaves normal. 
Flowers terminal or in terminal clusters. 
Flowers several to many in a terminal raceme. 
11. Vagnera. 
Flowers 1-3 in a simple umbel. 12. Disporum. 
Flowers axillary or in axillary clusters. 
13. Polygonatum. 
Sevals and petals very unlike. 
Leaves alternate, long and narrow. 8. Calochortus. 
Leaves whorled, ovate. 14. Trillium. 
Flowers dicecious; mostly vines with tendrils, often woody. 
15. Smilax. 
1. Zygadenus. 257. 
Ovary partly inferior; perianth segments with obcordate glands. 
1. Z. elegans. 
Ovary superior; glands ovate or semiorbicular. 2. Z. intermedius. 
1. Zygadenus elegans Pursh. Death Camas. 
Common in northwestern part of the state. Gordon; Orella; Sheri- 
dan county; Sioux county; Rushville. 
2. Zygadenus intermedius Rydb. Death Camas. 
Zygadenus gramineus Rydb. 
In the northwestern part of the state. Both foliage and bulbs 
poisonous. Berea; Fort Robinson; War Bonnet canyon. 
2. Leucocrinum. 261. 
1. Leucocrinum montanum Nutt. Sand-Lily. 
Common in the sand-hills in the western part of the state. Chad- 
ron; Cheyenne county; Fort Robinson; Frontier county; McCook; 
Gordon; North Platte; Perkins county. 
3. Allium. 262. 
Outer coat of the bulb membranous, not fibrous. 
Umbel nodding. 1. A. cernuum. 
Umbel erect. 2. A. stellatum. 
Outer coat of the bulb fibrous. 
Ovary and capsule not crested. 
Umbel composed largely of bulblets. 3. A. canadense. 
Umbel with few or no bulblets. 
Scape usually over 3 dm. tall; pedicels over 15 mm. long. 
4, A. mutabile. 
Scape usually less than 2 dm. tall; pedicels less than 15 mm. 
5. A. nuttallii. 
Ovary and capsule crested. 6. A. reticulatum. 
