520 LILIACE^E. (LILY FAMILY.) 



1. Stems herbaceous, not prickly ; flowers carrion-scented ; ovules 2 in each cell ; 

 leaves membranous, mucronate-tipped ; berries bluish-black with a bloom. 



1. S. herbacea, L. (CARRION-FLOWER.) Stem climbing, 3 -15 high; 

 leaves ovate or rounded, mostly heart-shaped or truncate at base, abruptly acute 

 to short-acuminate, 7 - 9-nerved, smooth; petioles -1' long; peduncles elon- 

 gated (3 - 4' long, or sometimes even 6 - 8' and much longer than the leaves), 

 20 - 40-flowered ; seeds 6. Moist meadows and river-banks; common, from 

 the Atlantic to Minn., Mo., and Tex. June. Very variable. Var. PULVER- 

 ULENTA, Gray, has the leaves more or less soft-downy beneath. 



2. S. tamnifblia, Michx. Stem upright or climbing; leaves mostly 5- 

 nerved, smooth, broadly ovate to lanceolate, truncate or cordate at base, ab- 

 ruptly acute to acuminate, some of them hastate with broad rounded lobes ; 

 peduncles longer than the petioles ; berry smaller, 2 - 3-seeded. Pine-barrens, 

 N. J. to S. C. 



3. S. ecirrhata, Watson. Erect, -3 high, without tendrils (or only the 

 uppermost petioles tendril-bearing), glabrous ; lower leaves reduced to narrow 

 scale-like bracts, the rest thin, 5 - 7-nerved, broadly ovate-elliptical to roundish, 

 acute, mostly cordate at base, 2-5' long, sometimes verticillate, sparsely pu- 

 bescent beneath; peduncles about equalling the petioles (1 -2$' long), on the 

 lower part of the stem; umbels 10-20-flowered; berry 3-seeded. Md. to 

 S. C., west to Mich, and Mo. May, June. 



2. Stems woody, often prickly ; ovules solitary ; glabrous throughout. 

 * Leaves ovate or roundish, etc., most of them rounded or heart-shaped at base, and 



5 - ^-nerved, the three middle nerves or ribs stronger and more conspicuous. 



*- Peduncles shorter or scarcely longer than the petioles (2 - 6"), flattened ; leaves 



thickish, green both sides. 



4. S. Walter!, Pursh. Stem low, somewhat angled, prickly near the base 

 or unarmed ; leaves ovate to ovate-lanceolate or oblong, somewhat heart-shaped or 

 rounded at base (3-4' long) ; berries coral-red. Pine barrens, N. J. to Fla. 



5. S. rotundif61ia, L. (COMMON GREENBRIER. HORSE-BRIER.) Stem 

 armed with scattered prickles, as well as the terete branches ; branchlets more 

 or less 4-angular ; leaves ovate or round-ovate, often broader than long, slightly 

 heart-shaped, abruptly short-pointed (2 -3' long); berries blue-black, with a 

 bloom. Moist thickets, N. Eng. to Ga., west to Minn, and Tex. Very vari- 

 able, passing into var. QUADRANGULARIS, Gray, which has branches, and espe- 

 cially branchlets, 4-angular, and is more common west. 



- - Peduncle longer than but seldom twice the length of the short petiole, flat 

 tened ; leaves tardily deciduous or partly persistent ; berries black, with a bloom. 



6. S. glauca, Walt. Terete branches and somewhat 4-angular branchlets 

 armed with scattered stout prickles, or naked ; leaves ovate, rarely subcordate, 

 glaucous beneath and sometimes also above, as well as the branchlets when young 

 (about 2' long), abruptly mucronate, the edges smooth and naked. Dry 

 thickets, E. Mass, to Fla., west to S. Ind., Mo., and Tex. 



7. S. b6na-D.OX, L. Branches and the angular (often square) branchlets 

 sparsely armed with short rigid prickles; leaves varying from round-heart- 

 shaped and slightly contracted above the dilated base to fiddle-shaped and hal- 

 berd-shaped or 3-lobed, green and shining both sides, cuspidate-pointed, the 



