132 



ASCLEPIADACEAE. 



Zygostelma Benthami, Baill. Hemidesmus indicus, Williams, 

 Bull. Herb. Boiss., v. (1905) p. 950, non R. Br. 



Anhin, Schomburgh, 284. 



Streptocaulon Griffith!!, Hook. f., F.B.I., iv. p. 10. S. tomenlosum, 

 Williams, Bull. Herb. Boiss., v." (1905) p. 949, non Wight. 



Chiengmai, in mixed and evergreen jungles on Doi Sootep, 

 330 m., Kerr, 1244 ; Anhin, Schomburgk, 252. 



Distr. Tenasserim, Mergui, Tonkin, S. China. 



Myriopteron extensum, K. Sch. Hosseus, ii. p. 427. M. panicu- 

 latum, Griff. F.B.I., iv. p. 11. Streptocaulon extensum, Wight 

 For. Fl. Burma, ii. p. 198. 



Chiengmai, in mixed jungle, foot of Doi Sootep, 300 m., Kerr, 770 ; 

 Kampeng, 80 m., Hosseus, 24. 



Distr. Bengal, Assam, Burma, Yunnan. 



Secamone micrantha, Dene. 



Sriracha, near sea-shore, Kerr, 2044. 



Distr. Malaya (S. China ?). 



Toxocarpus Hosseusii, Schlechter, Engler Bot. Jahrb., xl. Beibl. 

 92, p. 1 ; Hosseus, ii. p. 427. 



Paknampo, Hosseus, 13 ; ? Chiengmai, in scrub jungle, 300 m., 

 Kerr, 1668. 



The specimens collected by Kerr are in fruit only and are 

 referred doubtfully to this species. 



Oxystelma esculentum, Br. F.B.I., iv. p. 17. 



Chiengmai, 300 m., Kerr, 1443. 



Distr. S.E. Asia. 



Lao name, Kio Kou Mai (ex Kerr}. 



Calotropis gigantea, Br. F.B.I., iv. p. 17; For. Fl. Burma, ii. 

 p. 200. 



Bangkok, Zimmermann, 152 ; Chiengmai, 300 m., by moat, Kerr, 

 1957. 



Distr. India, Burma, China, Malaya. 



Lao name, Pun Tuan (ex Kerr). 



Asclepias curassavica, Linn. F.B.I., iv. p. 18 ; Coll. et Hemsl., 

 Journ. Linn. Soc., xxviii. p. 87 ; Hosseus, ii. p. 427. 

 Chiengmai, Doi Sootep, 1020 m., Kerr, 874. 

 Native of Trop. America. 



Raphistemma pulchellum, Wall. F.B.I., iv. p. 19. 

 Chiengmai, in scrub jungle, 300 m., Kerr, 1469. 

 Distr. Sikkim, Yunnan, Burma, Assam. 



Gymnema Griffith!!, Craib, a G. molli, Wall., caulibus pilis longius- 

 culis patulis instructis, corona cliversa recedit. 



Caules repentes vel volubiles, albo-tomentelli praetereaque pilis 

 longiusculis patentibus densius instruct!. Folia ovato-elliptica, 

 ovato-lanceolata vel rarissime elliptica, apice acuminata, basi 

 rotundata vel obtusa, 3-5 cm. longa, l'2-3'6 cm.lata, rigide chartacea, 

 supra parce adpresse albo-pilosula, subtus molliter pubescentia, 

 margine integra, ciliata, nervis lateralibus utrinque 4-5 intra 

 marginem arcuatis supra conspicuis subtus cum nervis trans versis 



