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LILIACEAE 
Flowers in a loose terminal raceme.2. Camassia. 
Flowers in panicles.3. Chlorogalum. 
Flowers in umbels, always with a circle of 2 or more bracts. 
Perianth-segments united below into a tube. 
4. Brodiaea. 
Perianth-segments distinct or nearly so. 
Bracts 2 or 3 ; bractlets none. Allium. 
Bracts 4 to 6 ; pedicels with minute bractlets. 
6. Muilla. 
Flowers without bracts; outer perianth-segments sepal-like, the 
inner petal-like.....7. Calochortus. 
Stems leafy, from a scaly bud. 
Style 3-cleft, rarely entire; anthers attached at base or below 
the middle. .......... 8 . Fritillaria. 
Style entire; anthers attached at middle.9. Lilium. 
Plants with vertical rootstocks; stem with a whorl of 3 leaves and a 
single flower...1.......:....10. Trillium. 
Shrubs; leaves rigid, bayonet-like....:....:... 11. Yucca. 
B. Fruit a berry; plants with rootstocks. 
Leaves foliaceous. 
Stem simple; flowers very small, in simple or compound racemes 
12. Smilacina. 
Stem branching; flowers solitary or few in a cluster. 13^ Disporum. 
Leaves reduced to scales; branchlets filiform. 14. Asparagus. 
1. ZYGADENUS Michx. Zygadene 
Stem simple, scape-like, from a coated bulb. Leaves linear, mostly 
basal. Flowers greenish white, in a raceme or panicle. Perianth nearly 
rotate, withering-persistent. Segments ovate or oblong-lanceolate, with 
a green glandular spot at the narrow base. Capsule deeply 3-lobed. 
(Greek zugon, a yoke, and aden, a gland.) 
1. Z. venenosus Wats. Death Camas. Plants 2 to 5.8 dm. high; 
leaves narrowly linear, the basal much broader; raceme broader than in 
no. 2, more or less compound; bracts of raceme lanceolate, much ex¬ 
ceeding the buds; stamens equaling perianth.—Mountain and valley 
meadows. 
2. Z. fremontii Wats. Star Zygadene. Plants 3.5 to 7 dm. high; 
bulb globose or oblong, the outside coats dark; raceme narrow, mostly 
simple, with mostly green bracts; stamens >4 as long as perianth; gland 
greenish-yellow, tdothed on its upper margin.—Bushy hills and plains, 
common. 
2. CAMASSIA Lindl. Camass 
Stems scape-like, from a tunicated bulb, the leaves all basal. Flowers 
dark blue or nearly white. Pedicels jointed at the summit. Perianth- 
segments oblanceolate, somewhat spreading. Style slightly 3-cleft at apex. 
(Quamash, or camass, the name of the northwest Indians.) 
1. C. leichtlinii Wats. Plants 2.8 to 5./ dm. high; racemes loosely 7 
to 18-flowered; perianth 1.8 to 3 cm. long; its segments 5 to 9-nerved, 
withering about the ovary, at length deciduous; pod oblong-obovate’ 
