a new Natural Order of Plants. 37 



5. DiDYMOCARPUS ELONGATA. 



D. herbacea erectiuscula didynama, foliis oppositis ovatis utrin- 

 que acutis serratis, spicis axillaribus secundis, pedicellis 

 binatis remotis, corolla elongate. 



Found on Pulo Bintangor, an island lying off the west coast of 

 Sumatra. 



A small erect herbaceous plant, about half a foot high, pilose. 

 Leaves opposite, petiolate, about five inches long, ovate, 

 acute at both ends, serrated, papillous, and pilose with 

 rather long hairs above, villous beneath with short hairs. 

 Petioles channelled above, and ciliate along the edges of the 

 furrow. Stipules none. Peduncles axillary, solitary, bear- 

 ing a unilateral spike rather longer than the leaf. Pedicels 

 in pairs, each pair rather remote. Bracts linear, at the 

 base of the pedicels. Calyx five-cleft ; lacinia linear, acute, 

 erect, tomentose, as well as the whole spike. Corolla tubu- 

 lar, somewhat curved, white, with a purplish tinge, slightly 

 tomentose without, bilabiate ; upper lip two-lobed ; lower 

 rather elongated, three-lobed. Stamina four, didynamous, 

 each pair connected by their anthers. Anthers two-lobed, 

 reniform. <S/^/e shorter than the stamina. Stigma thickened, 

 emarginate. Capsule long, silique-shaped, pointed, two- 

 valved, two-celled ; cells bipartite (pseudo-quadrilocular) : 

 seeds attached to the re volute edges of the placentae, which 

 form the pseudo-partitions of the cells, numerous, small, 

 not winged. 



Obs. The remotely flowered secund spikes, and the nearly tu- 

 bular corolla with elongated lower lip, distinguish this from 

 all its congeners. 



6. DiDYMOCARPUS 



