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DESCRIPTIVE LIST OF NEW PLANTS. 
GLOSSARY OF TERMS USED IN BOTANICAL 
DESCRIPTIONS. 
Diadelphous. Having several stamens joined at the base into 
two separate bundles. 
Diandrous. Having only two stamens. 
Dichotomous. Forked, when branches are divided at each 
ramification into two equal parts. It also occurs in the 
leaves of a few plants, though but rarely. 
Dicotyledones. An extensive natural class, containing many 
prominent forms. It is distinguished by the plants pro¬ 
ducing more than one cotyledon, or seed-leaf. 
Didymous. Borne in pairs, double. 
Didynamous. Having four stamens, two of which are longer 
than the others. 
Diformis. Contorted, having some peculiar or unusual shape. 
Diffuse. Spreading in an irregular horizontal direction. 
Digitate. Having an outline like the fingers of a hand spread 
open. 
Dilated. Flattened into a thin, delicate lamina, or plate. 
Dimidiate. Divided into two halves. Also expressive of a per¬ 
fect development of one half and an imperfect state of the 
other. 
Dimorphous. Having an irregular singular shape, a departure 
from the ordinary forms of similar parts. 
Dipterous. Winged. 
DESCRIPTIVE LIST OF NEW PLANTS. 
Aristolochieh:. Gynandria Hexandria. 
Aristolochia gigantea. An extensive stove-climber, with cor¬ 
date approaching to reniforme leaves, and large axillary pendent 
flowers. The tube is cream-white, tinged with green, the lower 
half is oblong, inflated, obscurely veined, three-angled at the 
back, and having two pairs of oval depressions or glands at the 
base. The tube thence becomes contracted, bent like a syphon, 
then enlarging and becoming excessively inflated on the anterior 
side; again it becomes contracted, and at once expands into the 
ample, singularly concave, almost conchiform limb, reticulated 
