Class XXII. Order XII. 



the stipules. Umbels of flowers small, on short, axillary stalks. 

 Berries small. Moist woods. -Jxine. 



SMILAX PEDUNOULARIS. Muhl. Long stalked Smilnx. 



Stem round, unarmed ; leaves roundish-ovate, 

 acuminate, nine nerved, peduncle of the fertile um- 

 bel longer than the leaves. 



A rank, herbaceous, climbing plant. Stem round, smooth, 

 attaching itself to other plants by its stipular tendrils. Leaves 

 of the stem large, heart-shaped, with a short point, petioled, 

 smooth, with about nine nerves. Flowers small, greenish, with 

 an offensive odour, in simple umbels, on very long, axillary pe- 

 duncles. The fertile ones are succeeded by large bunches of 

 rounded, compressed, crowded, bluish berries. The axils of 

 many of the leaves give rise to short, barren branches, support- 

 ing half a dozen ovate, five nerved leafets. June. Perennial. 



POLYAWDRM. 



275. POPULUS. 

 POPULJJS TREMULOIDES. Mich. American Jlspen. 



Leaves roundish, abruptly acuminate, serrulate, 

 pubescent at the edge. J^lich.f. 



The small, tremulous leaves of this Poplar have great af- 

 finity to those of the European Aspen, whose quivering foliage 

 has long been proverbial. The tree hardly attains to the mid- 

 dle size. The flowers appear in April, long before the leaves, in 

 pendulous, silken aments. The leaves are small, compared 

 with other species, light, roundish, scarcely hearted at base. 

 The bark is smooth, and the wood light, fine, soft, and perisha- 

 ble. 



POPULUS GRANDIDENTATA. J\Iich. Large Jlspen or Poplar. 



Petioles compressed; leaves round-oval, smooth 

 31 



