254 TRANSACTIONS AND PEOCEEDINGS OF THE [Sess. lviii. 



the west side of the island. This plant, which is also native 

 in Mauritius, was not observed by the other botanists who 

 previously visited Eound Island. 



AsCLEPIADACE.f:. 



Trighosandra borbonica, Dene. — De Candolle, Pro- 

 dromus viii. 626 {fide X. E. Brown). This plant is not 

 recorded from Mauritius in Baker, Flor. Maur. Seych., but 

 it is recorded from Bourbon by Petit — Thouars and 

 Lepervenche — Mezieres, in De Candolle, Prodromus \dii. 

 626, published in 1844. In Piound Island the plant is 

 common in the forest belt on the south side of the hill, 

 530-540 feet above sea-level. The following description 

 was made from living specimens, by me, on 27th Xovember 

 1889 : — A woody climber with a stem 3 inches thick 2 

 feet from the ground, and long, slender, terete, glabrous, 

 greyish-brown branches, twining right to left round other 

 plants to a height of 10 feet ; juice milky. Leaves 

 opposite, petioled, 1—3 inches long, |— 2 inches broad, 

 oblong or obovate-oblong, obtuse or sub-acute, mucronate, 

 rounded or slightly cordate at the base, entire, glabrous, 

 dark green above, pale green beneath, coriaceous, penni- 

 nerved. Calyx purplish green. Corolla-limb 5-lobed, pale 

 whitish purple. Pollinia waxy. Stigma peltate, pale 

 3'ellow, with a shallow, pale purplish-yellow pit on the top 

 at the centre. Follicles one or two developed, divaricate, 

 2-3 inches long, fusiform, glabrous, dark green, becoming 

 brown after dehiscence. Seeds -^ inch long, obspathulate, 

 liexuous, wrinkled, glabrous, brown, with the truncate apex 

 crowned with a copious tuft of simple, spreading, white 

 hairs 1 inch long. 



Barkly and Home, in Trans. Roy. Soc. Maur., 1869, 

 pp. 118 and 136, record this plant from Eound Island, in 

 1869, under "No. 2. Streptocaulon species." 



Tylophora laevigata. Dene. — Baker, Flor. Maur. Seych., 

 p. 228. I found this plant, in flower and fruit, common 

 all over the island, from the seashore to the top of the hill 

 1055 feet above sea-level. It is also native in Mauritius. 



Barkly and Home saw this plant in Piound Island in 



