949 



LISTE 



DES 



PLANTES CONNUES DU SIAM 



PAR 



Frédéric IV. WILLIAMS 



(Suite et fin.) 



Farn. 103. GENTIANACEJE 



857. Canscora Helferiana G. B. Clarke. — Three Pagodas Pass, going 

 from Yé in the Burmese province of Tenasseri m into Siam (Helfer, 1837; Kew 

 distrib. n. 5816). See also Hook, f., Fl. ßrit. Ind. IV, p. 106. 



858. Nymphoides indica var. siamensis Williams, nom. nov. — On a 

 small pond at Cape Ngob, gulf of Siam; F K G. v. p. 263 (« Limnanlhemum 

 indicum var. siamensis » Ostf., var. nova). 



Fam. 104. APOCYNACEJE 



859. Bousingonia Mekongensis Pierre, in Bull. Soc. Linn. Paris, 1898, 

 p. 36. — Bassac région of the valley of the Mekong, 1877 (Harmand, n. 1422, 

 ex herb. Pierre, n. 5240). The spécimen in Herb. Kew. has leaves 13 ctim. long; 

 and on the sheet to which the spécimen is attached are carefully drawn analy- 

 tical détails of the floral structure. The locality given is not in Cochinchina, as 

 stated by Pierre, but in Siam. ßy Engler and Prantl the name is misprinted 

 « Bousigonia ». 



860. Quirivelia Bantamensis Williams, nom. nov. - Anhin, in Battam- 

 bong (Schomburgk, n. 272) 



Syn. — Ichnocarpus Bantamensis Miq. 



Fam. 105. ASCLEPlADACEtâ 



861. Streptocaulon tomentosum Wight et Arn. — Anhin, inBattambong 

 (Schomburgk, n. 252). 



bulletin de l'herbier boissier, n<> 10, 30 septembre 1905. 64 



