. Journal of the Straits Branch of the Royal Asiatic Society. by a series of short papers, of which this isthe first. It deals with the seedling of Anisoptera costata, Korthals. Anisoptera costata is a tall forest tree wild in the BotanicGardens, Singapore, where two individuals flowered freely atthe commencement of April, 1916, producing with new foliage,panicles of pendent white flowers from the ends of the shape of the flower is given above (fig. 1) : the corolla doesnot fall. The seeds from this flowering ripened about the end of June:and when they fell, a leaf-fall occurred,
. Journal of the Straits Branch of the Royal Asiatic Society. by a series of short papers, of which this isthe first. It deals with the seedling of Anisoptera costata, Korthals. Anisoptera costata is a tall forest tree wild in the BotanicGardens, Singapore, where two individuals flowered freely atthe commencement of April, 1916, producing with new foliage,panicles of pendent white flowers from the ends of the shape of the flower is given above (fig. 1) : the corolla doesnot fall. The seeds from this flowering ripened about the end of June:and when they fell, a leaf-fall occurred, followed by a more abundantproduction of new leaves than had been the case when the flowersappeared. The seeds germinated at once, lying on the ground. Ingermination the radicle is extruded, curves earthwards, and anchorsitself; then the cotyledons are pulled out of the capsule by thestraightening of the hypocotyl. The process is seen in progress inFigs. 2 and 5 below. Jour. Straits Branch R. A. Soc, No. 75, 1917. 44 NOTES ON DIPTEROCARPS. sm. cot. *. Eig. 2. Seedling at the time when Fig. 3. Seedling at the time when the cotyledons have just been with- the whorl of leaves is expanding, drawn from the capsule. Z. cot. larger I pair the two larger of the four cotyledon; sm. cot. lesser cotyledon. leaves. The figures show how unequal are the two cotyledons: thelarger is markedly four-ridged on the back (figs. 2, 3, and 5) : thelesser is only obscurely four-ridged and is sagittate-reniform isoutline. This inequality though very evident in Anisoptera. is yetgreater in some other genera of the order, Dryooalanops. During germination the petiole of the cotyledons elongatesonly a little. Brand is and Gilg, in Englers Pflanzenfamiiien,III. 6, (1895) p. 242, from very imperfect knowledge stated thatgreat elongation is a character of the order, an error due tofamiliarity with the genus Dipterocarpus, where it occurs, and wantof knowledge of other genera. In several if not all
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