l(X> DIANDRIA MONOGYNIA. Oka. 



3. O. dioica. R. 



Arboreous, dioicous. Leaves opposite, short-petioled, ob- 

 long, serrate. Panicles axillary. 



Atta-jam, the vernacular name in Silhet, where it is indi- 

 genous ; also on the hills of Chittagong. In both places it 

 grows to be a pretty large tree, the timber of which is reck- 

 oned excellent, and put to many uses by the natives. Flow- 

 ering time iln month of March and April ; fruit ripe in July. 



"Bark of die old ligneous parts ash-coloured ; of the young 

 shoots smooth and green. Leaves opposite, short-petioled, 

 oblong, tapering equally at each end, remotely, and acutely 

 serrate, acuminate, smooth, from four to eight inches long, by 

 from two to four broad. Stipules, the oval concave scales of 

 the buds only. Panicles axillary, and opposite, below the 

 haves, thin and not above half their length. .Male flowers 

 more numerous, small. Calyx tour-toothed. Coro/one-pe- 

 tallea, tube ven short; border four-parted. Filaments two, 

 vers short, inserted on the short tube of thecorol. Anthers 

 oval, hid in the corol. Germ none, a small two-lobod gland 

 supplies its place. Female on a separate tree, (probably 

 lir.u.M lphbodite, and in thai case all the corols with the sta- 

 mina, must have fallen off at a rery en Is period; which [ 

 have no reason to think w;is the case, as they were examined 

 at what I consider ;i proper age, and no traces of the place 

 where a corol grew could be found.) Calyx as in the male. 

 Carol none. Germ superior, o\ ate, two-celled, w ith two uvu- 

 la in each, attached to the top of the partition. Style short. 

 Stigma t\\ o-lobed. Drupe nearly round, in size and colour 

 much like the common sloe, Primus Spinosa, one-celled. Nut 

 conform to the seed, thin and rather brittle than hard, one- 

 celled. Seed solitary, conform to the nut. Integument single, 

 thin. Perisperm conform to the seed, firm, pearl-colour. 

 Embryo inverse, shorter than the perisperm, and consider- 

 ably narrower. Cotyledons ovate-lanceolate. Radicle supe- 

 rior. 



