440 



SMILACEAE. 



4. Smilax glauca Walt. Glaucous- 

 leaved Greenbrier. (Fig. 1053.) 



Smilax glauca Walt. Fl. Car. 245. 1788. 

 Smilax sf>inulosa J. E. Smith; Torr. Fl. X. Y. 2: 

 303. 1843. 



Rootstock deep, knotted and tuberous. Stem 

 terete; branches and twigs angled, armed with 

 rather stout numerous or scattered prickles, or 

 .sometimes unarmed; petioles 3 // -6 // long, ten- 

 dril-bearing; leaves ovate, acute or cuspidate at 

 the apex, sometimes cordate at the base, entire, 

 glaucous beneath and sometimes also above, 

 mostly 5-nerved, i|i' / -6 / long, l /z''-^ wide; 

 peduncles flattened 6 // -i6 // long; umbels 6-12- 

 flowered; pedicels 2 // ~4 // long; berries bluish 

 black, ripening the first year, about 3" in dia- 

 meter, 2-3-seeded. 



In dry sandy soil, eastern Massachusetts to Flor- 

 ida, west to Kansas and Texas. May-June. 

 Smilax spinulosa J. E. Smith, is a form with numerous small prickles on the lower part of the 

 stem, and more elongated, sometimes halberd-shaped leaves. It occurs in southern New York, 

 but is not well understood. 



5. Smilax rotundifolia L,. Greenbrier. Catbrier. Horsebrier. (Fig. 1054. ) 



Smilax rotundifolia L. Sp. PI. 1030. 1753. 



Smilax caduca L. Sp. PI. 1030. 1753. 



Smilax quadrangujaris Willd. Sp. PI. 4: 775. 1806. 



Rootstocks long, sparingly tuberous. Stem 

 woody, terete, the branches and young shoots 

 often 4-angled, glabrous; prickles scattered, stout, 

 straight or a little curved, sometimes none; peti- 

 oles 3 // -6 // long; leaves thick and shining when 

 mature, thin when young, ovate, nearly orbicular, 

 or lanceolate, acute or acuminate at the apex, ob- 

 tuse or cordate at the base, entire or the margins 

 erose-denticulate, 5-nerved, 2 / -6 / long, io // -6 / 

 wide; peduncles flattened 3 // -i / long; umbels 6- 

 25-flowered; pedicels i // -4 // long; perianth-seg- 

 ments pubescent at the tip; filaments 2-3 times as 

 long as the anthers; berries black, i-3-seeded, 

 about 3" in diameter, maturing the first year. 



In woods and thickets, Ontario to Minnesota, south 

 to Florida and Texas. April-June. 



6. Smilax hispida Muhl. Hispid Green- 

 brier. (Fig. 1055.) 



Smilax hispida Muhl.; Torr. Fl. N. Y. 2: 302. 



Glabrous, stem terete below, and commonly 

 thickly hispid with numerous slender straight 

 prickles, the branches more or less angled; peti- 

 oles 4 // -o/ / long, tendril-bearing, rarely denticu- 

 late; leaves thin, green on both sides, ovate, 

 abruptly acute and cuspidate at the apex, obtuse 

 or subcordate at the base, 7-nerved, or the older 

 ones sometimes with an additional pair of faint 

 nerves, 2 / ~5 / long, I'-s' wide, the margins usually 

 denticulate; peduncles flattened, 9 // -2 / long; um- 

 bels io-26-flowered; pedicles slender, 2"-$" long; 

 filaments a little longer than the anthers; berries 

 bluish black, about 3" in diameter, maturing, the 

 first year. 

 In thickets, Ontario to Minnesota and Nebraska, south to Virginia and Texas. May-July. 



