60 LILIACEAE (LILY FAMILY) 



ERYTHRONIUM (DOG-TOOTH VIOLET) 



Low, from membrane-coated corm; stem scapelike. Leaves flat, 

 smooth, tapering at base. Flowers large, solitary or in a terminal raceme. 

 Perianth segments lanceolate, deciduous, mostly revolute, the inner usually 

 with a callous tooth on each side of the base and a groove in the middle. 

 Stamens 6, hypogynous. Stigma 3-lobed or -cleft. Capsule nearly sessile, 

 obovoid, membranous. (Gk. erythros = red ; because some European 

 species have reddish flowers.) 



A. Leaves mottled. 

 B. Flowers somewhat purple specially on the inside, often with some white or yellow. 



C. Perianth segments acuminate, white or pinkish rose outside, golden orange 

 deepening to purple on the inside; anthers bright yellow. W. E. revolutum 



CC. Perianth segments obtuse, dark purple at base, bordered with yellow above; 

 anthers brownish. U. E. hendersoni 



BB. Flowers white or yellow or pink, without purple. 



D. Inner perianth segments with neither auricles nor scales at base; stigmas 

 faintly lobed; leaves acute. U. E. howellii 



DD. Inner perianth segments with scales and sometimes with auricles at base; 



stigmas plainly lobed or segmented. 



E. Leaves acute; outer perianth segments acuminate, 3.5-5 cm. long; stigmas 



distinct. W. E. giganteum 



EE. Leaves obtuse; outer perianth segments obtuse, 2.5-3.2 cm. long; stigmas 



united by their edges. U. E. citrinum 



AA. Leaves not mottled. 



F. Flowers white, orange at base, often pinkish when old; outer perianth segments 



acuminate. W. C. E. montanum 



FF. Flowers bright yellow, whitish at base; outer perianth segments obtuse. 



G. Anthers white; flowers 2.5-3.2 cm. long. W. C. E. E. parviflorum 



GG. Anthers purple; flowers 3.7-7.5 cm. long. E. E. grandiflorum 



CALOCHORTUS (MARIPOSA LILY) 



Perennial, from coated bulb; stem simple or branched, leafy. Leaves 

 linear-lanceolate, only i basal, many-veined, those on the stem clasping. 

 Flowers in a terminal bracted raceme. Sepals 3, lanceolate, greenish. 

 Petals 3, cuneate-obovate, wide, variously colored. Stamens 6, on the base 

 of the perianth segments, included; anthers linear. Stigmas 3, sessile, 

 recurved, persistent. Capsule sessile, elliptic to oblong, thin, 3-angled or 

 -winged, mostly septicidal. (Gk. kalos = beautiful, chortos = grass. 

 The leaves are grasslike.) 



A. Flowers pink or purplish or lavender, sometimes of a different color at base. 

 B. Petals acute or acuminate. 



C. Petals 3.5-5 cm. long; anthers obtuse, 8-12 mm. long. 



D. Petals purple, hairy $ way up inside. E. C. macrocarpus 



DD. Petals pale blue, hairy only J way up inside. E. C. cyaneus 



CC. Petals 1.2-1.7 cm. long; anthers acuminate, about 4 mm. long. U. 



C. maweanus 



