226 FLORA NIGRITIANA. 
Puare XXVII.—Fig. 1. flower, slightly magnified; f. 9. 
petal; f. 3. stamens and pistil; f. 4. fruit; f. 5. transverse 
section of the same ; the three last maynified. 
A second West Tropical African species, the H. Afzelii, Br., 
from Sierra Leone, has been described by Planchon in the Lond. 
Journ. Bot. v. 7. p. 525. 
XVII. Matvacez. 
1, Malachra capitata, Linn.—Congo River, Christ. Smith. 
Another species, M. hispida, Guill. et Perr., is confined to 
Senegal. 
1. Urena lobata, Linn.—U. diversifolia, Schum. et Thonn. 
Beskr, p. 808.—U. virgata, Guill. et Perr.? Fl. Seneg. p. 48- 
A most abundant W. African plant, of which I think I can 
recognize the following varieties : à 
a. Caule griseo, pilis stellatis sparsis aspero, foliis integris 3-5- 
lobisve subter petioloque cano-pubescentibus, calyce hispido. 
—Fernando Po, Nun and Quorra Rivers, Vogel; Sierra 
Leone, Don. 
The common East and West Indian form of the plant. — 
B. Foliis super pilis sparsis fulvis obsitis subter canis vix pilo- 
sis, calyce dense hispido lobis elongatis.—On the Nun, Vogel. 
y. Undique pilis patentibus in caulem stellatis obsita, calyce 
dense hispido.— Fernando Po, Vogel. 
Very similar to a Phillippine Island state of the plant. 
8. Foliis profunde 3-lobis, lobo intermedio lineari-elongato, late- 
ralibus oblongis subacutis.—Cape Coast, Vogel. 
Similar to a Brazilian variety. r 
e. Foliis minoribus flaccidis pilis stellatis patulis pubescentibus, 
calyce hirsuto.—Senegambia, Heudelot. 
Identical with cultivated specimens from the West Indies and 
indigenous East Indian ones. 
Guillemin and Perrottet describe two other Urene; U. obtu- 
sata and U. virgata, whose claims to specifie distinction appear 
doubtful to me. 
