428 APPENDIX. No. V. 
family in Professor Smith’s herbarium, three should form genera hitherto 
unnoticed. 
The first of these new genera is a shrub, in several of its characters related 
to Sparmannia, like which, it has the greater part of its outer stamina destitute 
of antherze: in the structure of its fruit, however, it approaches more nearly 
to Corchorus. 
The second genus also agrees with Corchorus in its fruit ; but differs from 
it sufficiently in the form and dehiscence of the anthere ; as well as in the short 
pedicellus, like that of Grewia, elevating its stamina and pistillum. : 
The third, of which the specimens are in fruit only, fortunately, however, 
accompanied by the persistent flower, is remarkable in having a calyx of three 
lobes, while its corolla consists of five petals; the stamina are in indefinite 
number; and the fruit is composed of five single-seeded capsules, connected 
only at the base. In the want of symmetry or proportion between the divisions 
of its calyx and corolla, it resembles the Chlenacee of M. du Petit Thouars,* 
as well as Oncoba of Forskael and Ventenatia of M.de Beauvois.t he exist- 
ence of this new genus decidedly belonging to Tiliaceze, and having a consi- 
derable resemblance to Ventenatia, whose place in the system is, indeed, not 
yet determined, but of which the habit is nearly that of Rhodolana, seems in 
some degree to confirm M. du Petit Thouars’s opinion of’ the near relation of 
Chlenacez to Tiliacee ; though M. de Jussieu, in placing it between Ebenaceze 
and Rhodoracez,} appears to take a very different view of its affinities. 
MALVACE. Of this family 18 species were observed on the banks of 
the Congo. It forms, therefore, about one thirty-fourth part of the Phaeno- 
gamous plants of the collection; which 1s somewhat greater than the equinoc- 
tial proportion of the order, as stated in Baron Humboldt’s dissertation,§ but 
nearly agrees with that of India, according to Dr. Roxburgh’s unpublished 
Flora Indica. 
The greater part of the Malvacee of the collection, belong to Sida and 
Hibiscus ; and certain species of both these genera are common to India and 
America. Urena americana and Malachra radiata, hitherto supposed to be 
* Hist. des Véget. des Isles de V Afrique, p. 46. + Flore d'Oware, 1, p. 29, t. 17. 
{ Mirbel Elem. de Physiol. Veg. et de Bot. 2, p. 855. 
§ Prolegomena, p. xviii. De Distrib. Geogr. Plant. p. 43, 
