518 LILIACE^E. (LILY FAMILY.) 



SUBORDER II. Ldliaceae proper. Never climbing by tendrils. 

 Very rarely dioecious. Seeds anatropous or amphitropous. 

 SERIES A. Floral bracts scarious. Stamens perigynous on the usually 

 withering-persistent nerved perianth ; anthers introrse. Style undivided, 

 mostly persistent. Fruit a loculicidal capsule or a berry. Leaves trans- 

 versely veined. 



. Scape from a coated bulb ; fruit capsular ; leaves linear. 

 +- Flowers umbellate ; segments 1-nerved ; pedicels not jointed. 



2. Alliuin. Perianth 6-parted. Capsule deeply lobed, often crested; cells 1-2-seeded. 



Very alliaceous. 



3. Nothoscordum. Perianth 6-parted. Seeds several in each cell. Not alliaceous. 



4. Androstephium. Perianth tubular-funnel-form. Filaments in the throat, united 



into a crown. 



*- - Flowers racemose, 6-parted, the segments 3 - several-nerved. 



5. Camassia. Flowers light blue, long-racemose. Filaments filiform. 



6. Ornithogalum. Flowers greenish white, sub-corymbose. Filaments dilated. 



H- -i- - Flowers densely racemose ; perianth urn-shaped, 6-toothed. 



7. Muscari. Flowers deep blue, small. Stamens included. 



* * Stem or scape not from a bulb, several-flowered ; capsule many-seeded. 



8. Hemerocallis. Scape from a fleshy-fibrous root. Flowers few, large, yellow, tubu- 



lar-funnel-forni; limb 6-parted. Stamens and long style declined. Seeds globose. 



9. Yucca. Stem woody, leafy. Flowers white, campanulate, 6-parted. Stigmas sessile. 



Seeds flat. 



* * Leafy stems (scape in n. 10) from running rootstocks ; fruit a berry ; leaves cordate 



to lanceolate (except n. 12) ; flowers white ; pedicels jointed. 



t~ Perianth gamophyllous, 6-lobed. 



10. Convallaria. Leaves sheathing the scape. Flowers racemose ; perianth bell-shaped. 



11. Polygon atum. Stem leafy. Flowers axillary ; perianth cylindrical. 



- * Perianth-segments distinct, small, spreading, persistent. 



12. Asparagus. Stems branching, the apparent leaves thread-like. Flowers axillary. 



13. Smilacina. Stem simple, leafy. Flowers 6-parted, racemose or paniculate. 



14. Maianthemum. Stem low, 2-leaved. Flowers 4-merous, racemose. 



SERIES B. Floral bracts none or foliaceous. Stamens hypogynous or at 

 the base of the distinct segments of the deciduous perianth (persistent in 

 n. 23) ; anthers extrorse or dehiscent laterally. Style undivided, decid- 

 uous (stigmas sessile and persistent in n. 23). Fruit a loculicidal cap- 

 sule or a berry. Veinlets anastomosing (transverse in n. 15, 17 - 19). 



* Fruit a berry ; stem or scape from a creeping rootstock ; leaves broad, alternate or radi- 

 cal ; flowers narrowly campanulate. 



15. Streptopus. Stem leafy. Flowers axillary, on bent pedicels. Anthers sagittate, 



acute ; filaments deltoid or subulate. 



16. Disporum. Stem leafy. Flowers few, in terminal umbels. Anthers oblong, obtuse ; 



filaments slender. Veinlets anastomosing. 



17. Clintonia. Flowers umbellate on a scape, few or many. 



* * Fruit a capsule. . 



*- Stems leafy, from a short or creeping rootstock ; flowers few, solitary, pendulous ; cap- 

 sule few-seeded. 



18. Uvularia. Stem terete. Leaves perfoliate. Flowers terminal. Capsule truncate, 



3-lobed. 



19. Oakesia* Stem angled. Leaves sessile. Flowers opposite the leaves. Capsule 



acutely 3-winged. 



