112 87. ASCLEPIADEE : CYNANCHES. 
now constituted, for it is doubtful whether the characters 
derived from the corona and the direction of the pollinia should 
in all cases decide the position of a plant in a classification. On 
this point, however, we must defer to botanists who have examined 
a very much larger number of members of this natural order. 
The Acanthaceous genus Henrya, of Nees, has been reduced to 
Tetramerium, and apparently on good grounds. 
87. ASCLEPIADEA: MARSDENIEEX. 
1. Pentasachme Championi, Benth. in Hook. Kew Journ. Bot. 
v. p. 54; Walp. Ann. v. p. 504; Benth. Fl. Hongk. p. 228 (Pen- 
tasacme) ; Maxim. in Mél. Biol. ix. p. 811. 
Honexone (Wright! Wilford! Hance! Champion!) Mus. 
Brit. ; Herb. Kew. 
This is very near P. caudatum, Wall., a native of Assam, Khasia, 
and Pegu. 
2. Pentasachme glaucescens, Decne. in DC. Prodr. viii. p. 627. 
Curna: without locality (Staunton ex Decaisne). 
3. Pentasachme Stauntoni, Decne. in DC. Prodr. viii. p. 627. 
CurNA: without locality (Staunton ex Decaisne). 
The genus of this and of P. glaucescens, Decne., is doubtful, as 
the flowers were unknown. 
1. Gymnema affine, Decne. in DC. Pradr. viii. p. 622; Benth. 
Fl. Hongk. p. 227 ; Maxim. in Mél. Biol. ix. p. 811. 
Gymnema sylvestre, var. chinense, Benth. in Hook. Kew Journ. Bot. v. 
p. 54. 
Curna: without locality (Millett!); Foxen: Amoy interior 
(Swinhoe !) ; Formosa: Tanisui (Oldham, 330!), Takow (Play- 
fair!); Kwanetuna: Macao (Hance! Callery! Tate!), Pakhoi 
(Playfair!); Honexona (Champion! Wright!). Mus. Brit. ; 
Herb. Kew. 
2. Gymnema tingens, Wight et Arn. Contrib. Ind. Bot. p. 45; 
Wight, Ic. Pl. Ind. Or. t. 593 (var. cordifolia) ; Hook. f. Fl. 
Brit. Ind. iv. p. 81. 
Bidaria tingens, Decne. in DC. Prodr. viii. p. 623, partim. 
Asclepias tingens, Buch. in Roxb. Fl. Ind. ii, p. 53. 
