108 87. ASCLEPIADEE: CYNANCHEF, 
Suanst: Siaowutaishan, at above 10,000 feet altitude ( Han- 
cock!) Mus. Brit. 
X17, Cynanchum Mooreanum, Hemsl. 
Vincetoxicum chinense, S. Moore in Journ. Bot. 1875, p. 228; Maxim. 
in Mél. Biol. ix. p. 797. 
Cuexrana: Ningpo mountains (Faber !); Kianest: Kiukiang 
(Shearer!); Hurru: Ichang and immediate neighbourhood (A. 
Henry, 1597!). Herb. Kew. 
18. Cynanchum roseum, R. Br. in Mem. Wern. Soc. i. p. 47. 
Cynoctonum roseum, Decne. in DC. Prodr. viii. p. 532; Franchet, Pl. 
David. p. 209; Maxim. Prim. Fl. Amur. pp. 196 et 474, et in Mél. Biol. 
ix. p. 798; Ledeh. Fl. Ross. iii. p. 47. 
Asclepias purpurea, Pall. “ It. iii. p. 260," ex Ledeb. 
Curmi: near Peking (ex Maximowicz), Jehol (David, 1756, 
ex Franchet). 
Siberia from the Ural eastward, and in Mandshuria. 
19. Cynanchum sibiricum, R. Br. in Mem. Wern. Soc. i. 
p. 48. 
Asclepias sibirica, Linn. ; Gmelin, Sib. iv. p. 77. 
Vincetoxicum sibiricum, Decne. in DC. Prodr. viii. p. 525; Ledeb. Fl. 
Ross. ài. p. 46; Maxim. in Mél. Biol. ix. p. 779; Baker et Moore in 
Journ. Linn. Soc. xvii. p. 384; Debeaux, Fl. Tchef. p. 96; Franchet, Pl. 
David. p. 208, et in Mém. Soc. Sc. Nat. Cherbourg, xxiv. p. 235. 
CHIH : near Peking (Bunge! Bushell! Bretschneider!), Jehol 
(David, 1805!) ; Surnexrne: Moukden (Webster!), Talienhwan 
(Birnie!), Chienshan and Hingjing (Ross!); Suanrune (Main- 
gay) Mus. Brit.; Herb. Kew. 
Mongolia and Siberia. 
41$* 20, Cynanchum (§ Vincetoxicum) stenophyllum. Hemsl., n. sp- 
Suffrutex vel herba sublignosa, habitu foliisque C. sibirico simil- 
lima sed sepius elatior, durior, fere omnino glabra, et flores ex 
axillis 2-3 superioribus tautum oriundi. Folia opposita, conferta, 
brevissime petiolata, vix coriacea, lineari-laneeolata, adscendentia, 
venis primariis inconspieue anastomosantibus. Flores 14-2 
lineas longi, cymoso-corymbosi vel subumbellati; cyms quam 
folia breviores, breviter pedunculate, pauciflore, pedicellis gra- 
cilibus ; calyx glaber, 5-fidus, lobis ovatis obtusis corolla dimidio 
brevioribus; corolla subeampanulata, extus glabra, intus parce 
