444 Mr. G. Bentham's Enumeration of the Plants 



54. Vandellia diffusa. Linn. Mant. p. 89. — Borders of the Essequibo 

 and Rupunoony. Schomburgk, n. 516. " Flowers white with a blush of 

 rose." (Schomb.) 



This appears to be a common plant on the eastern coasts of tro- 

 pical America. It is Sieber's n. 305 from Martinica, and his n. 170 

 from Trinidad, and Gardner's n. 1097 from Pernambuco, and is 

 also in Salzmann's and other Bahia collections. 



55. Torenia parvijlora, Hamilt. Benth. Scroph. Ind. p. 39. — Rich soil 

 along the large rivers in British Guiana. Schomburgk, n. 335. It is also 

 Gardner's n. 213 from Rio Janeiro. 



The three last species belong to East Indian genera, and two at 

 least, Vandellia Crustacea and Torenia parvijlora, are very common 

 East Indian species, which have evidently been introduced from 

 thence to the American coasts. This may also be the case with the 

 Vandellia diffusa, although I have not myself yet seen any specimens 

 from the old world. 



56. Buclmera palustris, Spreng. Benth. in Hook. Comp. Bot. Mag. i. p. 

 365. — Piripea palustris. Aubl. PL Guian. ii. p. 628. t. 253. Moist Savan- 

 nahs, British Guiana. Schomburgk, n. 419. — French Guiana. Leprieur 

 and Herb. Par. n. 184. 



57. Buchnera lavandulacea. Cham, et Schlecht. Linnsea, ii. p. 589. — 

 Dry Savannahs, amongst rocks, British Guiana. Schomburgk, n. 99. 



This is also Cuming's n. 1100 from Panama. It should probably 

 be referred either to B. longifolia or to B. lithospermifolia of Hum- 

 boldt and Kunth, which may indeed be varieties of one species. 



58. Scoparia dulcis. Linn. Sp. p. 168. — British Guiana. Schomburgk, 

 n. 622. 



It is also Gardner's n. 90, from Rio Janeiro; Cuming's n. 1000, 

 from Lima ; and occurs in most collections from tropical America 

 and the West Indies. 



59. Gerardia hispidula. Mart. Nov. Gen. et Sp. iii. p. 13. t. 207. — 

 Benth. in Hook. Comp. Bot. Mag. i. p. 207. — Sandy swamps. British Guiana. 

 Schomburgk, n. 674. — French Guiana. Leprieur, Herb. Par. n. 183. 



" The whole plant assumes a purplish tint, the calyx is deep pur- 

 ple, the corolla whitish, with a purple tint." (Schomb.) The bractese 

 rub easily off after the flowering is over, but may almost always be 

 observed on the young pedicels. 



60. Glossostyles aspera. Cham, et Schl. Linnsea, iii. p. 22. Benth. in 

 Hook. Comp. Bot. Mag. i. p. 212. — French Guiana. Leprieur, Herb. Par. 

 n. 182. 



LABIATE. 



61. Hyptis recurvata, Poit. Benth. Lab. Gen. et Sp. p. 81. — Sands of 

 the Essequibo, British Guiana. Schomburgk, n. 605. 



