APOCYNACEA. 313 
1. Apocynum androsemifolium, Linn. Sp. Pl. i. p. 213; Bot. Mag. t. 280; 
A. Gr. Synop. Fl. N. Am. ii. p. 82. 
_Canapa and British CotumBia southward.—NortH Mexico, mountains south-east of 
Monclova, Coahuila (Palmer, 806). Hb. Kew. 
In Palmer’s specimen the cymes are only two- or three-flowered ; but it does not seem 
to differ otherwise. 
2. Apocynum cannabinum, Linn. Sp. Pl. p. 311; Torr. Bot. U.S. & Mex. 
Bound. Surv. p. 158; A. Gr. Synop. Fl. N. Am. p. 83; Hook. Fl. Bor.-Am. 
t. 139. . 
“Apocynum hypericifolium, Ait. Hort. Kew. ed. 1, 1. p. 304; Hook. l.c. t. 140. 
OreGon and eastern CanaDA southward on both sides of the continent.—Nortu 
Mexico, Sonora (ex Torrey). 
16. HAPLOPHYTON. 
Haplophyton, A. DC. Prodr. viii. p. 412 ; Benth. et Hook. Gen. Plant. ii. p. 722. 
An herbaceous monotype. 
1. Haplophyton cimicidum, A. DC. Prodr. viii. p. 412; A. Gr. Synop. Fl. N. 
Am. li. p. 82. 
Echites cinerea, A. Rich. in Sagra’s Fl. Cub. in. p. 93. 
New Mexico; Arizona.—Nortu Mexico, Sonora (Thurber, Schott) ; Sourn Mextco, 
Tehuantepec (Andriewr, 250); GuaTemMana, Acasaguastlan (Bernoulli, 973).—CuBa. 
Hb. Kew. 
17. TRACHELOSPERMUM. 
Trachelospermum, Lemaire, Jard.-Fleur. i. t. 61; Benth. et Hook. Gen. Plant. ii. p. 720. 
Six or seven species of climbing shrubs or trees, all except the following inhabiting 
tropical and temperate Eastern Asia. 
1. Trachelospermum difforme, A. Gr. Synop. Fl. N. Am. ii. p. 85. 
Echites difformis, Walt. Carol. p. 98; Bart. Fl. Am. Sept. i. t. 10. 
Forsteronia difformis, A. DC. Prodr. vii. p. 487. 
Secondatia, Benth. et Hook. Gen. Plant. u1. p. 723. 
Vireinia to Fioripa and Trexas.—Nortu Mexico, Monterey (Haton & Edwards) ?. 
Hb. Kew. 
18. ODONTADENIA. 
Odontadenia, Benth. in Hook. Journ. Bot. iii. p. 242; Benth. et Hook. Gen. Plant. ii. p. 723. 
Climbing shrubs. About eighteen species in Tropical America, chiefly in Brazil and 
Guiana. 
BIOL. CENTR.-AMER., Bot. Vol. II., December 1881. 28 
