LILY FAMILY 305 



in racemes, umbels or panicles ; stemless or leafy-stemmed perennials from 

 bulbs or corms, or sometimes from root-stocks, often with long, grass-like 

 leaves. 



1. Styles distinct 



a. Leaves broad, ovate to oblanceolate ; stems 



leafy; flowers greenish VERATRUM 



b. Leaves linear or grass-like; flowers yellow or 



white 



(1) Flowers yellow; stems sticky-hairy TOFIELDIA 



(2) Flowers white; stems not sticky-hairy 



(a) Leaves needle-shaped, 2 mm. wide or 



less; rare XEROPHYLLUM 



(b) Leaves linear, 4-15 mm. wide; common ZYGADENUS 



2. Styles united 



a. Flowers axillary, solitary or 1-few in a cluster 



(1) Parts of the perianth separate; leaves 



heart-shaped and clasping at base STREPTOPUS 



(2) Parts of the perianth united into a cylind- 



ric tube; leaves not heart-shaped and 



clasping POLYGONATUM 



b. Flowers terminal 



(1) Flowers on a leafy stem 



(a) Flowers white or whitish to lilac 



x. Flowers in a raceme or panicle WAGNERA 



y. Flowers solitary or 2-3 in an umbel 

 (x) Flowers nodding; leaves ovate to 



lance-oblong DISPORUM 



(y) Flowers erect; leaves linear, grass- 

 like 

 m. Flowers 1-3 in. wide; petals 



fringed at base CALOCHORTUS 



n. Flowers 1-2 cm. wide; petals not 



fringed LLOYDIA 



(b) Flowers yellow to orange or purple 



x. Flowers erect, orange, 2-3 in. wide LILIUM 

 y. Flowers nodding, purple or yellow and 



purple-dotted, 1 in. wide or less FRITILLARIA 



(2) Plants stemless 



(a) Leaves stiff, spiny-pointed, 1-3 ft. long; 



flowers white in a long raceme YUCCA 



(b) Leaves not stiff and spiny-pointed 



x. Flowers yellow, nodding ERYTHRONIUM 



