SMILACEAE. 2JJ 



armed* with rather stout prickles, or sometimes unarmed; petioles 6-12 mm. long, 

 tendril-bearing; leaves ovate, acute or cuspidate at the apex, sometimes cordate at 

 the base, entire, mostly 5 -nerved, 3— 15 cm. long; peduncles flattened; umbels 

 6-I2-flowered; pedicels 4-8 mm. long; berries bluish black, about 6 mm. in 

 diameter, 2-3-seeded. In dry sandy soil, E. Mass. to Fla., Kans. and Tex. 

 May-June. 



6. Smilax rotundifolia L. Greenbrier. Catbrier. Horsebrier. 

 (I. F. f. 1054.) Rootstocks long, sparingly tuberous. Stem woody, terete, the 

 branches often 4-angled, glabrous; prickles scattered, sometimes none; petioles 

 6-12 mm. long; leaves thick and shining when mature, acute or acuminate at the 

 apex, obtuse or cordate at the base, entire or the margins erose-denticulate, 

 5 -nerved, 5— 15 cm. long; peduncles flattened; umbels 6-25 -flowered; pedicels 2-8 

 mm. long; perianth-segments pubescent at the tip; filaments 2-3 times as long as 

 the anthers; berries black, 1-3-seeded, about 6 mm. in diameter. In woods and 

 thickets, Ont. to Minn., Fla. and Tex. April-June. 



7. Smilax hispida Muhl. Hispid Greenbrier. (I. F. f. 1055.) Glabrous; 

 stem commonly thickly hispid with numerous slender prickles, the branches more 

 or less angled; petioles 8-18 mm. long, tendril-bearing; leaves thin, ovate, abruptly 

 acute and cuspidate at the apex, obtuse or subcordate at the base, 7-nerved, 5-13 

 cm. long; peduncles flattened; umbels 10-26-flowered; pedicels 4-6 mm. long; 

 filaments a little longer than the anthers ; berries bluish black. In thickets, Ont. 

 to Minn., Neb., Va. and Tex. May-July. 



8. Smilax Pseudo-China L. Long-stalked Greenbrier. (I. F. f. 1056.) 

 Glabrous; rootstock often bearing large tubers; stem terete, the branches angled. 

 Lower part of the stem beset with straight prickles, the branches mostly unarmed; 

 petioles 6-25 mm. long; leaves firm, ovate, often narrowed at about the middle or 

 lobed at base, acute or cuspidate at the apex, 7-9-nerved, 6-13 cm. long; pedun- 

 cles flattened, 2-8 cm. long, umbels 1 2-40-flowered ; pedicels 6-8 mm. long ; sta- 

 mens 6-10; berries black, 4-6 mm. in diameter. In dry or sandy thickets, Md. to 

 Neb., Fla. and Tex. March-Aug. 



9. Smilax Bdna-nox L. Bristly Greenbrier. (I. F. f. 1057.) Root- 

 stocks bearing large tubers ; stem terete or slightly angled, the branches often 

 4-angled. Prickles often wanting on the branches; petioles 6-12 mm. long; leaves 

 thick, ovate or commonly deltoid-hastate, glabrous, green on both sides, often spiny 

 on the margins and the veins beneath, acute or abruptly cuspidate at the apex, 

 obtuse, truncate or cordate at the base, 5-9-nerved, 3-1 1 cm. long ; peduncles 

 slender, flattened, 1.4-3 cm - l° n g: umbels 15 -45 -flowered; pedicels 4-8 mm. long; 

 stigmas 1-3; berries 4-6 mm. in diameter, mostly i-seeded. In thickets, Mass. to 

 Kans., Fla. and Tex. April-July. 



10. Smilax laurifolia L. Laurel-leaved Greenbrier. (I. F. f. 1058.) 

 Rootstocks bearing tubers sometimes 1.5 dm. thick; stem high-climbing, terete, 

 armed with strong straight prickles, the branches angled, mostly unarmed. Petioles 

 stout, 6-16 mm. long; leaves leathery, evergreen, elliptic or oblong-lanceolate, 

 acute or abruptly cuspidate at the apex, narrowed at the base, entire, 3 -nerved, or 

 sometimes with an additional pair of nerves near the margins, 5-1 1 cm. long; pe- 

 duncles stout, angled, 4-20 mm. long; umbels 6-30-flowered ; pedicels 4-6 mm. 

 long; anthers usually about one-third shorter than the filaments; stigma I, some- 

 times 2 ; berries black, ovoid, 4-6 mm. thick. In moist woods and thickets, S. X. J. 

 to Fla. and Tex., north in the Miss. Valley to Ark. March-Sept. 



11. Smiiax Walteri Pursh. Walter's Greenbrier. (I. F. f. 1059.) 

 Glabrous; stem angled, prickly below; branches commonly unarmed. Petioles 4-12 

 mm. long, angled; leaves ovate or ovate-lanceolate, rarely lobed at the base, cor- 

 date or subcordate. entire, 5-7-nerved, 5-13 cm. long, 2-8 cm. wide; peduncles 

 4-10 mm. long, flattened; umbels 6-15-flowered ; pedicels very slender, 4-6 mm. 

 long; berries globose, coral-red (rarely white), 6-8 mm. in diameter, 2-3-seeded. 

 In wet soil, pine barrens of N. J. to Fla., Tenn. and La. April-June. 



12. Smilax lanceolata L. Lance-leaved Greenbrier. (I. F. f. 1060.) 

 Glabrous, stem terete, usually prickly, the branches slender, long, mostly unarmed. 

 Petioles 2-4 mm. long ; leaves rather thin, lanceolate, acute or acuminate at the 

 apex, narrowed at the base, entire, shining above, 5-7-nerved, 5-10 cm. long; pe- 

 duncles thick, angled, 6-16 mm. long; umbels 8-40- flowered; pedicels 4-14 mm. 



