266 CRAIB—DIDISSANDRA AND ALLIED GENERA. 
there is only one open flower. In the dry state these two corollas 
differ considerably in the length of the posticous lip—the corolla 
of the smaller plant has a much shorter posticous lip than that 
of the larger. 
Ancylostemon, Craib. 
—- cinnamomeo- -lanate, midrib and nerves on undersurface of 
ves densely cinnamomeo- -lanate, the hairs soon becoming 
teste 1, notochlaena. 
Peduncles as. also midrib. and nerves. of undersurface of leaf with long 
spreading brown hairs (in nase A shorter ape ones). 
Ovary densely covered with short h : 2. saxatile. 
Ovary glabrous or with a few ater’ hairs. 
Calyx at flowering time 11 mm. long ; posticous lip of corolla with 
concave or straight ios thickened at apex and slightly 
lobulate 3, concavum. 
Calyx at flowering time not over 7 mm. long ; posticous lip sub- 
entire, emarginate or distinctly lobed, not thickened at apex. 
Leaves membranous, with a thin coating si =e hairs on, both 
surfaces.in addition to longer brown. o 4. convexum 
Leaves rigidly chartaceous, with a dense ae of white hairs 
on both surfaces in addition to longer brown ones 
; : : ; : : 5. Mairei. 
ot” ; 
+° +t. A. notochlaena, Craib, comb. nov. 
924V Didissandra notochlaena, Lévl. et Van. in Compte Rend. Ass. 
Fr. (1905), 1906, p. 425. 
Didymocarpus notochlaena, Lévl., l.c., p. 428. 
Oreocharis notochlaena, Lévl., Fl. Kouy-Tcheou, p. 185. 
Kouy-Tcheou, Tsin-gay, Tchao-se, Laborde et Bodinier, 2684 ! 
qt 2. A. saxatile, Craib, comb. nov. 
94\ Didissandra saxatilis, Hemsl. in Journ. Linn. Soc., xxvi, 227 
(1890). 
Didymocarpus saxatilis, Lévl. in Compte Rend. Ass. Fr. (1905), 
1906, p. 427. 
Hupeh. Wilson, 1584! Patung, Kuei, and Fang, on vertical 
cliffs, Henry. 
Szechuan. S. Wushan, Henry. 
var. ? microcalyx, Hemsl., Le. 
Szechuan. S. Wushan, Henry. 
3. A. concavum, Craib in Notes Roy. Bot. Gard. Edin., xj, 
P- 234 (1919). 
Yunnan. Mekong-Yangtze divide, Kari Pass. Lat. 27° 40’ N. 
Alt. 11,000, ft. On trunks of trees and moss-covered boulders 
