522 LiLiACE^. (lilt family.) 



Tribe "V. lillilEJE. Style 1, undivided (i. e. the three united throughout into one), 

 or rarely a sessile stigma. Fruit a locuUcidal pod. Seeds with a fleshy albumen. An- 

 thers introrse or extrorse. Stem commonly from a coated or scaly bulb. 

 # Leafy-stemmed from a scaly bulb. 



20. Llllam. Perianth 6-leaTed, deciduous. Pod oblong, many -seeded : seeds horizontal, flat, 

 * * Scape naked or nearly so, from a coated or rarely scaly bulb. Seeds mostly globular. 



H- Perianth of 6 separate or nearly separate divisions or sepals. 



21. Erythroniuiu. Flower single. Style club-shaped. Pod obovate, 



23. Ornitbogalum. Flowers corymbed, never blue or reddish. Style 3-sided. 



23. Scilla. Flowers racemed, purple or blue. Style thread-like. 



24. Allium* Flowers umbelled, from a spathe. Sepals 1-nerved. 



^ •*- Perianth globular or ovoid, 6-toothed. 



25. Miiscari* Flowers in a dense raceme, numerous, small, mostly blue. 



* * * No bulb. Stem or scape several-flowered. Pod many-seeded. 



26. Hemerocallis. Perianth large, funnel-shaped ; the sepals united in a narrow tube 



below. Stamens and long style declined. Seeds globular, black. 



27. Tucca. Perianth large, of fl separate broad divisions. Stigmas sessile. Stem woody 



and persistent : leaves persistent. Seeds flat, horizontal. Flowers panicled. 



28. Xartlieclum. Perianth 6-parted, the divisions narrow, yellowish. Filaments woolly. 



Style slender. Flowers in a raceme. Leaves equitaht^ Seeds small, long-tailed at both 

 ends. (Transition to Juncacese.) 



1. TRILLIUM, I/. Three-leaved Nightshade. 



Sepals 3, lanceolate, spreading, herbaceous, persistent. Petals 3, larger, 

 withering in age. Stamens 6 : anthers linear, on short filaments, adnate, in- 

 trorse ; the cells opening down the margins. Styles (or rather stigmas) awl- 

 shaped or slender, spreading or recurved above, persistent, stigmatic down the 

 inner side. Ovary 3 - 6-angled. Berry ovate, 3-celled (purple or red). Seeds 

 horizontal, several in each cell. — Low perennial herbs, with a stout and sim- 

 ple stem rising from a short and prosmorsc tuber-like rootstock, naked, bearing 

 at the summit a whorl of 3 ample, commonly broadly ovate, more or less ribbed 

 but netted-yeined leaves, and a terminal large flower ; in spring. (Name from 

 iritix, triple; all the parts being in threes.) — Monstrosities are not rare with 

 the calyx and sometimes the petals changed to leaves, or with the parts of the 

 flower increased in number. 



§ 1 . Flower sessile in the bosom of the leaves, erect ; petals vartfinq from spatulate 

 to lanceolate, 1 ' - 2' long, little exceeding the sepals, withering-persistent (stems 

 4'-\2' high). 



1. T. sessile, L. ieaws sessife, owa(e or rhomhoidal, acute, often blotched 

 or spotted ; sessiU petals erect-spreading, (dark (ind dull purple, varying to green- 

 ish). — Moist woods, Pennsylvania to Wisconsin, and southward. 



2. T. reourviltuni. Beck. Leaves contracted at the base into a petiole, ovate, 

 oblong, or obovate ; sepals rejlexed, petals pointed, the base narrowed into a claw, 

 dark purple. — Indiana to Wisconsin, and southward. 



§ 2. Flower raised on a peduncle : petals withering away afier blossoming. 



* Peduncle slender, erect or inclined: leaves rhombic-ovate, abruptly taper-pointed, 



sessile or nearly so by a wedge-shaped or acute base : petals plane. 



3. T. grandifl6rum, Salisb. (Lakue White T. or Wake Robin.) 

 Leaves rhomboid-obovate, longer than broad, barely sessile ; petals obovate, 



