54 ALLIACEAE 



Scape flattened; leaf-blades 5-8 mm. wide. 



Scape much exceeding the leaves in length; stamens 

 about equalling the petals and sepals. 



25. A. Douglassii. 

 Scape low, often exceeded by the leaves; stamens much 

 shorter than the petals and sepals. 

 Stamens two-thirds as long as the sepals; capsule 



scarcely crested. 26. A. Tolmiei. 



Stamens half as long as the sepals; capsules with 3 

 small crests. 27. A. Cusickii. 



Scape not flattened; leaf-blades 2-4 mm. wide. 



Petals about twice as long as the stamens; capsule not 



crested. 28. A.,Brandegei. 



Petals barely exceeding the stamens; capsule with minute 

 thick crests. 29. A. Nivii. 



Ovary and capsule distinctly 6-crested. 



Stamens and styles exserted; petals and sepals acute or obtuse. 



30. A. slellatum. 

 Stamens and styles not exserted; petals and sepals acuminate. 



Leaves more than one. 



Reticulations of the bulb-coats sinuate; leaves snorter than the 

 scape. 

 Bulb-coat thin, faintly reticulate; leaves 4-10 mm. wide. 



31. A. bisceptum. 

 Bulb-coat thick, strongly reticulate; leaves 1-3 mm. wide. 



32. A. Palmeri. 

 Reticulations of the bulb-coats straight; leaves longer than the 



scapes. 33. A. pleianthum. 



Leaves solitary, longer than the scape. 



Petals and sepals long-acimiinate, nearly twice as long as the 



stamens. 34. A. cristalum. 



Petals and sepals acute or short-acuminate, slightly longer than 



the stamens. 35. A. netadense. 



2. DIPTEROSTEMON Rydb. 



Perianth-tube funnelform, gradually widening into the limb ; bracts broad, conspicuously 

 exceeding the pedicels. 1. D. capitatus. 



Perianth-tube cyhndro-campanulate, abruptly widening into the limb; bracts narrow, 

 often exceeded by some of the unequal pedicels. ■ 2. D. pauciflorus. 



3. HESPEROSCOBDUM Lindl. l. H. lacteum. 



4. TRITELEIA Dougl. Wild Hyacinth. l. T. grandiflora. 

 6. ANDROSTEPHIUM Torr. l. A. breviflorum. 



Family 21. LILIACEAE. Lily Family. 



Plant with a short rootstock; flowers subumbellate on subterranean pedicels from the 

 crown of the rootstock ; petals and sepals united into a long tube. 1 . Leucocrintjm. 

 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 nectariferous 



groove. 2. Lilium. 



Anthers fixed near the base, slightly if at all versatUe; petals and sepals obovate- 

 oblanceolate, not clawed ; nectary a shallow pit. 

 Styles distinct from the middle; flowers purple, mottled with yellowish green; 



fruit winged. 3. PRrriLLAHlA. 



Styles connate to the summit; flowers yellow or orange; fruit not winged. 



4. OCHEOCODON. 

 Bulb tunicated. 



Anthers strictly basiflxed. 



Leaves 2, basal or nearly so; flowers nodding. 5. Ertthronicm. 



Leaves several, alternate; flowers not nodding. 



Flowers in ours usually soUtary; pedicels not jointed; dwarf alpine plant. 



6. Llotdia. 

 Flowers racemose; pedicels jointed below the middle; not alpine. 



7. Eremockintjm. 

 Anthers versatUe; scapose plants with racemose flowers. 8. Quamasi\. 



1. LETTCOCRINUM Nutt. Star op Bethlehem, Mountain Lily, Wild 

 Tuberose. i. l. montanum. 



2. LILIUM (Tourn.) L. Lily. 



Flower erect, solitary or subumbellate; petals and sepals unguiculate. 



Leaves linear. 1. L. umbellatum. 



Leaves lanceolate. 2. L. montanym. 



Flowers several, racemose, nodding ; petals and sepals not unguiculate. 



3. L. columbianum. 



