APPENDIX. No. V. 451 



a new species o{ Blepharis. All these geno-a exist in India, and none of them 

 have yet been found in America. 



CONVOLVULACE-'E. The herbarium of Professor Smith contains 

 twenty-two species of this order, among which however there is no p]ant that 

 presents any thing remarkable in its structure ; the far greater part belonging 

 to Ipora^a, the rest to Convolvulus. 



In the herbarium there is a single species of Hydrolra, nearly related to 

 Sagonea palustris of Aublet, which would also be referred to this order by 

 M. de Jussieu. But Hydrolea * appears, to me, to constitute, together with 

 Nama, a distinct family {Hydrolece) more nearly approaching to Polemoniaceae 

 than to Convolvulacese. 



SCROPHULARINiE. The collection contains only ten plants of this 

 family, of which two form new genera, whose characters depend chiefly on the 

 structure of antherae and form of coroUa. 



The LABIAT.^ of the herbarium consist of seven species, three of which 

 belong to Ocymum, a genus common to ecjuinoctial Asia and Africa, but not 

 extending to America ; an equal lunnber to Hypth, which is chiefly American, 

 and has not been observed in India : the seventh is a species of Hoslundia, a 

 genus hitherto found only on the west coast of Africa, and which in its 

 inflorescence and in the verticillate leaves of one of its species, approaches to 

 the following order. 



'o 



VERBENACEvE, together with Labiatae form one natural class,t for the 

 two orders of which it has already become difficult to find distinguishing 

 characters. 



In the Congo herbarium there are seven Verbenaceae, consisting of three 

 beautiful species of Clerodendron ; two new species of Vitex ; Stachytarplieta 

 indica of Vahl ; and a new species of Lippia, which, from its habit and 

 structure, confirms the union of Zapania with that genus, suggested 'by 

 M. Richard.j This species from the Congo has its leaves in threes, and has 

 nearly the same fragrance as Verbena triphylla, whose affinity to Lippia, 



* J id. op. citat. p. 488. + Flinders' Voy. 2, p. 565. 



X In Mic^. Flmr. Bor.-Amer. 9„ p. 15. 



