284 LILIACEAE (LILY FAMILY^ 



1. A. muscaet6xicum (Walt.) Gray. (Fly Poisox.) Leaves broadly linear^ 



elongated, obtuse (4-27 mm. wide); raceme simple; capsule abruptly 3-horned, 

 seeds oblong with a tieshy red coat. ( Chrosperma Ktze. ) — Open woods, L. L 

 to Fla., w. to Ky. and Ark. June, July. 



7. STENANTHIUM (Gray) Kunth. 



Perianth spreading ; the sepals narrowly lanceolate, tapering to a point from 

 the broader base, where they are coherent to the base of the ovary, much longer 

 than the short stamens. Seeds nearly wingless. — Smooth, with a wand-like 

 leafy stem from a bulbous base, long and grass-like conduplicate-keeled leaves, 

 and numerous small flowers in compound racemes, forming a long terminal 

 panicle ; flowering in summer. (Name composed of areuds, narrow, and d^'^os, 

 Jiower, from tlie slender sepals and panicles.) 



1. S. gramlneum (Ker) Kunth. Stem leafy (1-1.6 m. high), slender; leaves 

 4-10 mm. broad; panicle elongated, very open, with slender flexuous branches 

 or subsimple ; flowers nearly sessile or the fertile on short pedicels ; sepals linear- 

 lanceolate (white), 4-8 mm. long ; capsule mostly reflexed, narrowly oblong- 

 ovate, with spreading beaks. {S. angustifolium Kunth.) — In the Allegheniea 

 from Va. to Ga., westw. to Mo. S. robustum Wats., separated on its stouter 

 habit, dense panicle, broader leaves, and erect capsule, is doubtfully distinct. 



8. ZYGAdENUS Michx. 



Flowers perfect or polygamous. Perianth withering-persistent, spreading ; 

 the petal-like oblong or ovate sepals 1-2-glandular near the more or less narrowed 

 but not unguiculate base. Stamens free from the sepals and about their length. 

 Anthers, styles, and capsule nearly as in Melanthium. Seeds angled, rarely at 

 all margined. — Smooth and somewhat glaucous perennials, with rather large 

 panicled greenish- white flowers in summer. (Name composed of fi;y6s, a yoke, 

 and abriv, a gland, the glands being sometimes in pairs.) 



* Stem from a creeping rootstnck ; 2 conspicuous orbicular glands on each divi- 



sion of the perianth above the claw. 



1. Z. glablrrimus Michx. Stems 3-9 dm. high ; leaves grass-like, channeled, 

 conspicuously nerved, elongated, tapering to a point ; panicle pyramidal, many- 

 flowered ; flowers perfect; sepals nearly free (12 mm. long), ovate, becoming 

 lance-ovate, with a short claw. — Grassy low grounds, Va. to Fla. and Ala. 



* * Stem from a more or less bulbous base ; glands less obvious, covering the 



base of the perianth-segments. 



2. Z. chlordnthus Richards. Stem 3-9 dm. high ; leaves flat, carinate ; 

 raceme simple or sparingly branched and few-flowered ; bracts ovate-lanceolate • 

 base of the perianth coherent ivith the base of the ovary, the thin ovate or obo- 

 vate sepals marked with a large obcordate gland, the inner abruptly contracted 

 to a broad claw. (Z. elegans of auth., not Pursh.) — Calcareous soils, Gasp6 Co., 

 Que., to Man.,^ south w. to n. N. B., n. Vt., n. N. Y., n. O., n. Ill, and (?) Mo. 



3. Z. Nuttallii Gray. Like the last ; raceme rather densely flowered, with 

 narrow bracts ; perianth free ; sepals loith an ill-defined gland' at base, not at 

 all clawed ; seeds larger (6 mm. long). — Kan. to Tex. 



4. Z. leimanthoides Gray. Stem 7-15 dm. high, slender ; leaves narrowly 

 linear ; flowers small (8 mm. in diameter) and numerous, in a few crowded pan- 

 icled racemes ; only a yellowish spot on the contracted base of each division of 

 the free perianth. — Low grounds, pine-barrens, L. I. to Ga. 



9. melAnthium l. 



Perianth of 6 separate and free widely spreading somewhat heart-shaped oi 

 oblong and halberd-shaped or oblanceolats sepals, raised on slender claws, 

 cream-colored or greenish. Filaments shorter than the divisions of the perianth, 



