Pterospermum, MONADELPHIA DODECANDRIA, 161 
afterwards, In twelve years the trees are thirty or forty feet 
high; thick in proportion, and promise to be larger. 
Trunk straight. Young shoots very downy. Bark of 
the trunk and large branches ash-coloured. Leaves alter- 
nate, bifarious, short-petioled, spreading, lanceolate, entire, 
the base of the inferior half of each leaf protruded into a lobe 
of considerable size, and generally longer than the petiole, 
smooth above, hoary underneath, about six inches long, and 
nearly two broad. Stipules finely pinnatifid. #/owers ter- 
minal, and axillary, generally solitary, on short, downy, rust- 
coloured peduncles, drooping, large, pure white. Bractes, 
or involucre, generally three-leaved, and very downy, from 
three to five-parted, with divisions variously laciniate. Calyx 
tive-cleft; divisions recurvate, linear, longer than the corol ; 
on the inside white, and villous; on the outside clothed with 
brownish, stellate, short hairs. Corol sub-campanulate, 
Peials five, obliquely obovate-cuneate, Filaments fifteen, 
with anthers which are shorter than the style, and five abor- 
tive ones as long as the style ; they are not united at the base, 
but inserted on the apex of the long sub-cylindrical recep- 
tacle, round the base of the germ. Germ a litile elevated 
above the stamina, on a short, proper, fleshy receptacle, 
ovate, downy. Style single, filiform, as long as the abortive 
stamina, Stigma clavate. Capsule without angles, oblong- 
elliptic, from two to three inches long, and one and a half 
in diameter, ligneous, clothed with an immense quantity of 
brown, stellate pubescence, five-celled, five-valved. Sceds 
about ten in each cell, attached from the lower and inner 
angle in two rows to the inner edge of the triangular valves, 
obliquely oval, compressed ; from the upper end rises a large, 
straight, thin, brown, membranaceous wing. Iniegument 
Single, spongy, of a light brown, Perisperm amygdaline, 
entering into the various folds of the cotyledons. Embryo 
nearly as extensive as the perisperm, erect, pure white. Co- 
—— two, nipcee saa round, variously folded. Pe 
VOL, If. ee u 
