440 SMILACEAE. 
4. Smilax glatca Walt. Glaucous- 
leaved Greenbrier. (Fig. 1053.) 
Smilax glauca Walt. Fl. Car. 245. 1788. 
Smilax spinulosa J. E. Smith; Torr. Fl. N. 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, 114’-6’ long, '%4/-5’ wide; 
peduncles flattened 6’’-16’’ 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 I,, Greenbrier. Catbrier. MHorsebrier. (Fig. 1054.) 
Smilax rotundifolia 1,. Sp. Pl. 1030. 1753. 
Smilax caduca V,. Sp. Pl. 1030. 1753. 
Smilax quadrangularis Willd. Sp. Pl. 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- \ 
\ 
\ 
‘i 
4 
ye 
tuse or cordate at the base, entire or the margins 
erose-denticulate, 5-nerved, 2/-6’ long, 10//-6/ 
wide; peduncles flattened 3//-1’ long; umbels 6— 
25-flowered; pedicels 1//-4’/’ long; perianth-seg- 
ments pubescent at the tip; filaments 2-3 times as 
long as the anthers; berries black, 1-3-seeded, \ IY 
about 3/’ in diameter, maturing the first year. \ 
\\ 
+ | 
aan 
/ 
In woods and thickets, Ontario to Minnesota, south WA z= 
| 
to Florida and Texas. April-June. a se 
ei 6. Smilax hispida Muhl. Hispid Green- 
: ee brier. (Fig. 1055.) 
/ Smilax hispida Muhl.; Torr. Fl. N. Y. 2: 302. 1843. 
= q Glabrous, stem terete below, and commonly 
thickly hispid with numerous slender straight 
prickles, the branches more or less angled; peti- 
oles 4/’-9’’ 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, 1/5’ wide, the margins usually 
denticulate; peduncles flattened, 9’’-2’ long; um- 
bels 10-26-flowered; pedicles slender, 2’’-3/’ 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. 
