LILIACE^. (lily family.) 519 



•»- ■*- Stem or scape from a bulb or corm ; caj^sule many-seeded, 

 -0. Erythroniimi. Scape from a solid bulb, with a pair of leaves. Flower solitary 

 Seeds angled, obovoid. 



21. Liilium. Stem leafy from a scaly bulb. Seeds horizontal, flattened. 



* * * Fruit a berry; stem from a tuber-like rootstock. bearing 1 or 2 whorls of leaves; 



flowers terminal ; stigmas sessile. 



22. Medeola. Leaves in 2 whorls. Flowers umbellate. Perianth-segments similar, col- 



ored, deciduous. 



23. Trilliuin. Leaves (3) in a terminal whorl. Flower solitary ; outer sepals leaf-like, 



persistent. 



Series C. Floral bracts green or greenish (rarely scarious), or none. Sta- 

 mens at the base of the distinct 1 - several-nerved persistent perianth-seg- 

 ments; anthers small, versatile. Styles or sessile stigmas distinct. Cap- 

 sule mostly septicidal. Seeds with a loose testa or appendaged. Leaves 

 with transverse veinlets (except in n. 24 and 25). 



* Stems leafy or bracteate, from a thick tuberous rootstock ; flowers racemose ; anthers 



2-celled ; stigmas linear. 



24. Helonias. Leaves radical, oblanceolate. Flowers perfect. Capsule broadly oborate, 



niajiy-seeded. 



25. Chamselirium. Stem very leafy. Flowers dicecious. Capsule oblong, many-seeded. 

 2G. Xerophyllum. Stem very leafy ; leaves very narrow. Flowers perfect. Capsule 



few-seeded. 



* * Stems distichously equitant-leafy, from a creeping rootstock ; flowers on bracteolate ped- 



icels, racemose ; anthers 2-celled : stigmas small, terminal ; seeds often appendaged. 



27. Tofieldia. Bractlets 3, verticillate. Styles short. Seeds horizontal. 



28. Narthecium. Bractlet linear. Stigma slightly lobed. Seeds ascending. 



« * * Anthers heart- or kidney-shaped, confluently 1-celled, and peltate after opening ; 

 stigmas terminal ; capsule 3-beaked by the persistent styles ; seeds angled or flat- 

 tened and margined. 



■^ Stems tall, leafy, from a thick rootstock, pubescent above ; flowers polygamous, race- 

 mose-paniculate ; seeds flat, winged. 



29. Melanthium. Sepals free from the ovary, their long claws bearing the filaments. 



30. Veratrum. Sepals without claws, slightly adnate to the ovary. Leaves strongly 



n rved and plicate. 



t~ 4- Root mostly bulbous ; glabrous ; flowers racemose orpanicled ; seeds narrow, angled; 



leaves linear. 



31. Stenanthium. Sepals lanceolate, acuminate, without glands. 



32. Zygadenus. Sepals oblong to ovate, glandular toward the base. 



33. Amianthium. Flowers in a dense raceme. Sepals ovate-oblong, glandless, free 



from the ovary. Cells of the capsule widely divergent, 1 - 2-seeded. 



1. SMI LAX, Tourn. Greenbrier. Cat-brier. 



Flowers dioecious in umbels or axillary peduncles, small, greenish or yellow- 

 ish, regular, the perianth-segments distinct, deciduous. Filaments linear, in- 

 serted on the very base, the introrse anthers linear or oblong, fixed by the base, 

 apparently 1-celled. Ovary of fertile flowers 3-celled (1-celled, with single 

 stigma, in n. 11) ; stigmas thick and spreading, almost sessile; ovules 1 or 2 

 in each cell, pendulous, orthotropous ; fruit a small berry. — Shrubby or rarely 

 herbaceous, usually climbing or supported by a pair of tendrils on the petiole 

 of the ribbed and netted-veined simple leaves. (The ancient Greek name, of 

 obscure meaning.) 



