38 POLYGONACEZ. 
1. Podopterus mexicanus, Humb. et Bonpl. Pl. Aquin. ii. p. 89, t. 107; DC. 
Prodr. xiv. p. 171; Lam. Ill. Suppl. t. 940. 
South Mexico, around Vera Cruz (Humboldt & Bonpland), Manzanilla Bay (Barclay), 
Hb. Kew. 
10. TRIPLARIS. 
Triplaris, Linn. Gen. Plant. n. 103; Benth. et Hook. Gen. Plant. iti. p. 104. 
An exclusively Tropical-American genus of trees. Twenty-five species have been 
enumerated; but there are probably not more than ten distinct ones. | 
1. Triplaris auriculata, Meissn. in DC. Prodr. xiv. p. 174. 
Mexico (Pavon).—Co.omsta ? 
2. Triplaris cumingiana, Fisch. et Mey. in Mém. Acad. St. Pétersb. série 6, 
vi. p. 148; DC. Prodr. xiv. p. 175; Seem. Bot. Voy. ‘ Herald,’ p. 192. 
Triplaris colombiana, Meissn. in DC. Prodr. xiv. p. 175. 
Panama, Remedios, Veraguas (Seemann, 1168), along the railroad (S. Hayes, 121). 
Hb. Kew. 
| 11. RUPRECHTIA. 
Ruprechtia, C. A. Mey. in Mém. Acad. St. Pétersb. série 6, vi. p. 148, t. 4; Benth. et Hook. Gen. 
Plant. i. p. 104. 
A genus of about twenty arboreous and shrubby species, endemic in America, and 
ranging from Mexico to extratropical South America. 
1. Ruprechtia cumingii, Meissn. in DC. Prodr. xiv. p. 179. 
Ruprechtia costata, Meissn. loc. cit. p. 180? 
Soutn Mexico, neighbourhood of Tlacatalpan (Hahn); Guatemala (friedrichsthal) ; 
SatvaDor, Acajutla (S. Hayes, 458); Panama and—Co.ompia (Cuming, 1148). Hb. 
Kew. 
2. Ruprechtia, sp? 
Mexico, without locality (Parkinson; Bates). Hb. Kew. 
Series II. MULTIOVULATAZ AQUATICA. 
Order CXIII. PODOSTEMACE. 
Podostemacee, Benth. et Hook. Gen. Plant. iii. p. 105. 
Aquatic herbs, usually growing on submerged rocks in running water. There are ~ 
twenty-one genera, comprising about 120 species, which are widely dispersed in Tropical 
America, Africa, and Asia; a very few inhabit extratropical South Africa and North 
America; one has been found in Tropical Australia; and one doubtful member of the 
order has been found in South-western Europe. 
1. TRISTICHA. 
Tristicha, Thouar. Nov. Gen. Madag. p. 3; Benth. et Hook. Gen. Plant iii. p. 108. 
Three or four species in Tropical America and Africa. 
