ASCLEPIADE. 329 
1. Roulinia jacquini, Dene. in DC. Prody. viii. p. 517. 
Asclepias fotida, Cav. Ic. Pl. t. 158. 
Cynanchum fetidum, H. B. K. Nov. Gen. et Sp. iii. p. 202. 
Cynanchum racemosum, Jacq. Amer. t. 54. 
Souta Mexico, Yucatan (Linden, 351), tableland, Oaxaca, 5000 feet (Galeotti, 1538 ; 
Ghiesbreght), Queretaro, at 6000 feet (Humboldt & Bonpland). Hb. Kew. 
2. Roulinia unifaria, Engelm. in Torr. Bot. U.S. & Mex. Bound. Surv. p. 160. 
Gonolobus unifarius, Scheele in Linnea, xxi. p. 760. 
Trxas.—NortH Mexico, north of Mongclova, Coahuila (Palmer, 829). Hb. Kew. 
14. DICTYANTHUS. 
Dictyanthus, Dene. in DC. Prodr. viii. p. 604; Benth. et Hook. Gen. Plant. ii. p. 765. 
Twining shrubs, endemic in Mexico. 
1. Dictyanthus parviflorus, Hemsley, n. sp. 
Erectus ?, pilosus, foliis parvis cordatis, pedunculis 1-2-floris brevioribus quam folia, floribus 
puberulis ad 9 lineas diametro, corollz tubo brevi. 
Frutex erectus?, ramis teretibus, gracilibus, pilosis, pilis patentibus. Folia longiuscule petiolata, 
crassiuscula, ovato-cordata, vel interdum fere orbiculari-cordata, absque petiolo usque ad 
pollicaris, utrinque hispidulo-pilosa, apice obtusa, venis subtus prominulis. Flores solitarii vel 
gemini; pedunculi foliis subduplo breviores; calyx alte 5-partitus, extus pilosus, intus basi 
5-glandulosus, segmentis lineari-lanceolatis, acutis, ad 3 lineas longis; corolla badia, reticulata, 
minute puberula, ad 9 lineas lata, tubo brevi, lobis deltoideis. Folliculé non visi. 
Mexico, Cuernavaca and Chiapas ((thiesbreght, 663). Hb. Kew. 
2. Dictyanthus pavonii, Dene. in DC. Prodr. viii. p. 605; Bot. Mag. t. 4750. 
Dictyanthus campanulatus, Reichb. Select. Sem. Hort. Dresd. 1850, coll. p. 4; Walp. Ann. iii. p. 60. 
Tympananthe suberosa, Hassk. in Flora, xxx. p. 758. 
Sours, Mexico, ravines near Morelia, 3500 feet (Galeotti, 1304), Oaxaca (Ghiesbreght). 
—‘ Peru” (hd. Pavon). Ub. Kew. 
3. Dictyanthus reticulatus, Benth. et Hook. Gen. Plant. ii. p. 765. 
Rytidoloma reticulatum, Turcz. in Bull. Soc. Nat. Mosc. 1852, ii. p. 320. 
Souta Mexico, Sierra San Pedro Nolasco, &c. (Jurgensen, 692), Vera Cruz to Orizaba 
(Miller, 1108). Hb. Kew. 
4. Dictyanthus stapelieflorus, Rchb. Select. Sem. Hort. Dresd. 1850, coll. 
p-4; Walp. Ann. iu. p. 60. 
NortH Mexico, foot of the Sierra Madre, Durango (ex Reichenbach). 
15. TRICHOSACME. 
Trichosacme, Zuce. in Abhandl. k. Baier. Akad. Wiss. iv. pars 2, p. 11; Benth. et Hook. Gen. 
Plant. ii. p. 765. 
A remarkable monotype, which we have not seen. 
BIOL. CENTR.-AMER., Bot. Vol. II., February 1882. ou 
