LILIACEJE. (LILY FAMILY.) Ill 



* * Bracts several, not spathaceous, distinct; capsule not loled. 



+- Perianth parted to the base or nearly so; segments spreading, closely 2-3-nerved; 

 stamens in one row at the base; anthers versatile; capsule obovoid or subglobose, sessile 

 or nearly so. 



Flowers greenish-white; pedicels not jointed; leaves several Muilla. 2 



Flowers yellow; pedicels jointed; leaf solitary Bloomeria. 3 



+ HE- Perianth with segments more or less united and the stamens on the throat; 

 pedicels jointed. 



Perianth funnel-form, not saccate at the base, blue-purple, white or yellow. . Brodiaea. 4 

 Perianth tube 6-saccate at base, deep scarlet Brevoortia. 5 



2. Inflorescence racemose or paniculate. 



Flowers on a scape, blue Camassia. 6 



Flowers on a leafy stem, white. 



Stem from a large densely fibrous-coated bulb Chlorogalum. 7 



Stem frprn a creeping rootstock; leaves cordate to lanceolate. 



Leaves many, sessile. Flowers 3-merous Smilacina. 8 



Leaves 2 or 3, mostly petiolate. Flowers 2-merons .... Maiantliemum. 9 

 Stem stout, with rigid sheathing bracts Yucca. 10 



SERIES II. Floral bracts none or foliaceous. Perianth deciduous (except in Trillium}; 

 segments distinct. Stamens hypogynous or at the very base; anthers more or less extrorse 

 (introrse in Trillium). Styles deciduous (or sessile stigmas persistent). Flowers mostly 

 large and showy. (See ADDENDA.) 



1. Stem more or less leafy from a. bulb or corm. Fruit capsular.. 



* Perianth segments similar. 



Anthers distinctly versatile; style undivided Lilium. 11 



Anthers obscurely versatile; style divided to the middle Fritillaria. 12 



* * Perianth segments unlike. 



Anthers basifixed; stigmas sessile Calochortus. 13 



2. Stem from a rootstock. Perianth segments similar. Fruit a berry. 



Flowers apparently axillary on leafy branches Streptopus. 14 



Flowers terminating the leafy branches Frosartes. 15 



Flowers on a scape-like peduncle Clintonia. 16 



3. Stem from a thick rootstock. Perianth segments dissimilar. 



Flowers umbellate subtended by a pair of radical leaves Scoliopus, 17 



Flowers solitary subtended by a cauline whorl of 3 leaves Trillium. 18 



SERIES III. Perianth persistent; segments distinct. Stamens at the base of the perianth; 

 anthers extrorse, versatile, small, distinctly 2-celled (except in \ r eratrum). Styles distinct. 

 Flowers in simple racemes or panicles. 



