1890.] D. Prain — A List of Diamond Island Plants. 281 



APOCYNE^E. 



45. WiLLUGHBEiA EDCLis Roxb. In the interior jungle, only once 

 met with. 



46. Tabernjemontana crispa Roxb. Very abundant on the west 

 and somewhat less frequent on the north shore. A distinct northern 

 extension to the distribution of this species which has been hitherto 

 known from the Andamans and the Nicobars only. Follicles 3-keeled, 

 green, 2'75 cm. long, 1 cm. anteroposterior, 0'75 cm. lateral diams., 

 sessile avicular (beak slender recurved 6 mm. long) semicircular (ven- 

 trally convex, dorsum straight or very slightly concave), when opened 

 flat 2 "25 cm. across ; endocarp brilliant scarlet. 



47. Icitnocarpus frutescens P. Pr. Extensive climber ; frequent 

 in the interior. Flowers sweet smelling ; corolla here pure white, not 

 purple. 



ASCLEPIADACE.E. 



48. Dregea volubilis Penth. In the interior jungle ; frequent. 



GENTLANACE^E. 



49. Limnanthemum PARViEOLiUM Griseb. Plentiful near the west- 

 ern end of the tank and the only species present. A species with, so 

 far as is known, a somewhat detached distribution.* It is plentiful in 

 the western Deccan and in Ceylon. This gathering is intermediate as 

 to situation between that of Hooker and Thomson (Chittagong) and 

 that of Wallich (Tavoy) — the only two previous gatherings recorded 

 from the Trans-gangetic Peninsula • perhaps it indicates that it would be 

 oftener found if particularly looked for. J 



HYDROPHYLLACE^E. 



50. Htdrolea zeylanica Vahl. Swampy ground at west end of 

 tank : plentiful. 



BOBAGINACEtE. 



51. Ehretia LiEvis Roxb. Common; all the specimens from this 

 locality are absolutely glabrous ; there is no indumentum or any trace of 

 such, even on young branches, on young leaves, or on the youngest flower- 

 buds. 



* Another species with a similarly detached distribution is L. aurcmtiacum Dalz., 

 a common species in the western Deccan and Ceylon (from Bombay southwards), 

 and hitherto supposed to be confined te this area. Excellent specimens have, how- 

 ever, been sent (14th December 1889) by H. T. Peter, Esq., from Narayangunge near 

 Dacca, and identified by Dr. G. King, f. r, s. 



