Pterospermum. monadelphia dodecandria. 16] 



afterwards. In twelve years tlie trees are thirty or forty feet 

 Ligli ; thick in proportion, and promise to be larger. 



Trunk straight. Younxf shoots very downy. Bark of 

 the trunk and large branches ash-coloured. Leaves alter- 

 nate, bifarious, short |)etiuled, 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. Stipif/es linely pinnatifid. Flowers ter- 

 minal, and axillary, generally solitary, on short, downy, rust- 

 coloured peduncles, drooping, largo, pure white. Bractes, 

 or involncte, generally three leaved, and very downy, from 

 three to five-parted, with divisions variously laciniafe. Calyx 

 five clefi ; divisu^ns recurvate, linear, longer than the corol ; 

 on the inside white, and villous; on the outside clothed with 

 brownish, stellate, short hairs. Corol sub-cainpanulate. 

 Petals 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 little elevated 

 above the stamina, on a short, proper, fleshy receptacle, 

 ovate, downy. Stifle single, filiform, as long- as the abortive 

 stanu'na. Siif/ma clavate. Capsule without angles, oblong- 

 elliptic, from two to three inches long, and one and a half 

 in diameter, ligneous, clothed Aviih an immense quantity of 

 brown, stellate pubescence, five-celled, five valved. Seeds 

 about ten in each cell, attached from the lower isn 1 inner 

 angle in two rows to the inner edge of the trianguhtr valves, 

 obliquely oval, compressed ; from the upper end rises a large, 

 straight, thin, brown, membranaceous wing. Integument 

 single, spongy, of a light brown. Perixperm amyndaline, 

 entering into the various folds of the cotyledons. Emhrijo 

 nearly as extensive as the perisperm, erect, pure white. Co- 

 tyledons two, foliaceous, nearly round, variously fohled. Plu- 

 VOL. in. u 



