324 THE VEGETABLE WORLD. 
species of Phaseolus, or Conyolvulus, of South Europe, celebrated 
for its medicinal properties. The different kinds of Sarza, or Sar- 
saparilla, are now drawn from-natives of South America. Though — 
the genera are limited, the species are numerous and important. 
The Puytestacem are chiefly twining, sometimes upright 
shrubs, with large and showy flowers, about which little is 
known. The Trixi1acex are simple stemmed herbaceous plants, 
with tubers or rhizomes, resembling the Sarsaparillas in many 
Tespects. The RoxpurcHiace® are twining shrubs, with tuberous 
roots, large, showy, and somewhat fetid flowers, having reticu- 
lated and coriaceous leaves. There is but one genus and few 
species, all natives of the hotter parts of India. 
Crass VI.—Gymnocens. 
Have a simple continuous stem, leaves parallel, veined, and pinnate; ) rem. 2 ; 
Seales of the cone antheriferous, inelading t the Cycads, Zamias, and t LXXIII. Cycadeace2. 
Macrozameas, 
‘Stem branched; continuous leaves, simple, and acerose, females in LXXIV. Pinace®. 
cones, including the Pines, Abies, Junipare, ont Cypresses. i } 
hoary tedly branched, continuous, leaves simple, — fork- we 
é emales, solitary anthers, two. celled, opening longitudinally, in- | pxxy. axaces. 
cluding the Yews of Europe, the Dacridi f New Zealand, the 
Podocarps of the Cape, oe ae 
_ Stem repeatedly branched, jointed leaves, simple net-veined anthers, ; . 
oS opening by pores, including two genera, the Cate ce Joint- | pyxvi. Gnetaces. 
rs, phedra, natives res: tively of perate Europe merica, 
and of the hottest parts of India, Aros . : 
The GymnoceEns, from yuuvoc, “naked,” and yweoba, “to be,” and 
(i este ie NEE ial ee TST aS ae alate 
