362 THE VEGETABLE WORLD. 
The Menispermals, while possessing many features in common 
present very extreme differences of structural arrangement, which 
led Dr. Lindley to adopt the following division of the group. 
I. Heteroclinee, having the embryo homotropous; cotyledons 
foliaceous. . Anospermee: sepals imbricate or overlapping; 
embryo transverse ; cotyledons accumbent, curved ; albumen abun- 
dant round the embryo. III. Tiliacoree: inner row of sepals 
valvate in wstivation; embryo bent or curved; cotyledons long, 
narrow, and incumbent; radicle short and curved. IV. Leptogonee. 
sepals imbricate in estivation ; stamens distinct or united in a central 
column ; embryo bent or curved ; cotyledons long, slender, curved 
ina firm nearly annular ; albumen simple and small in quantity. 
V. Platygonee: embryo barred: cotyledons elongated, flat, incum- 
bent, curved in a horse-shoe oc. enclosed in albumen, small in 
quantity. WI. Pachygonee: inner row of sepals often imbricate, 
sometimes valvate in estivation ; embryo without albumen ; cotyle- 
dons large, thick, fleshy, incumbent, curved hemicyclically ; radicle 
small. The plants of this order are common within the tropics in 
Asia and America; climbing among the forest trees to agreat height, 
and remarkably tenacious of life—broken branches throwing oe 
slender thread-like shoots, which rapidly establish a connection with 
the soil. Forty-four genera, and three hundred and two species. 
CucurRBITALS. 
Diclinous Exogens, with monodichlamydous flowers, inferior 
ovary, placenta more or less parietal, embryo without oy trace 
albumen. 
The Cucumbers are a natural order of climbing or trailing plants, = 
unisexual monopetalows | flowers, Borwrod wentegers and pulpy fruit, climbing |. cv. Cucurbitace®- 
by means of tendrils formed of _— sho soeaet forage Penis é 
palmate ribbed leaves; they are natives af h chiefly within : 
the tropics of both rag 
spout ous branching exogenous plants or trees of considerable si ae 
with apetalous flowers, parietal pe net sy and a des de ruit. The few pater CVI. Datiscace®- 
which constitute the order are natives of Nort h America, Siberia, Northern 
India, the Indian Archipelago, and 
Herbaceo' ous exogens, oF under shrubs, leaves alternate, toothed, oblique 
at the base ; stip rge, scarious ; flo jowers unisexual in cymes. CVII. Bigoniace®- 
of the species weenie the Gasman in their climbing habits, having . 
been observed scrambling up trees and shrubs to the height of 30 | i 
eet. 
The Cucurbitals, either climbing by means of ten 
plants with unisexual flowers, have scabrous stems 
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