FLORA NIGRITIANA. 345 
Osbeckia.* Calycis lacinie decidue, appendicibus squamz- 
formibus setosis in tubo sparsis. Anthere uniformes. Cap- 
sula loculicide dehiscens. — (Sect. 1. Osbeckia. Species 
Asiatice, antherarum loculo in filamentum subsessili connec- 
tivo ad insertionem biauriculata.—Sect. 2. Podocelia. Species 
Africanze, antherarum loculo in filamentum stipitato mediante 
. . eonnectivo basi breviter producto.) 
Dissotis. Calycis lacinie deciduz, appendicibus squameformi- 
bus setosis in tubo sparsis. Antherz biformes. Capsula 
loculicide dehiscens. Species Africanz. 
Heterotis. Calycis lacinize persistentes, appendicibus squamze- 
formibus vel in tubo sparsis vel sub limbo numero definito in 
annulum dispositis: v. omnino nullis. Anthere biformes. 
Capsula loculicide dehiscens. Species Africanze. 
Tristemma. Calycis lacinie persistentes, tubo ciliarum annulis 
1-5 cineto v, nudo. Anthere uniformes. Capsula irregula- 
riter disrupta. Species Africans. 
Melastoma. Calycis lacinie deciduæ, tubo squamis paleaceis 
setisve imbrieatis obtecto. Anthere biformes. Capsula irre- 
gulariter disrupta. Species Asiatic. 
In all the African species of the above genera, excepting the 
Senegambian plants of doubtful affinity mentioned below, I have 
always found the flowers pentamerous; in several of the Asiatie 
ones, especially among the Osbeckie, they are tetramerous or 
variable, i 
l. Osbeckia tubulosa, Sm. in Rees’ Cycl. —DC. Prod. 3: p. 143. 
Sierra Leone, Vogel, Don. 
Caulis adscendens, 1-2-pedalis, annuus (nec fruticosus). Flores 
pauci subsessiles, sepe in spicam interruptam unilateralem 
aphyllam dispositi. Bractee ovate, acute, membranaceo- 
scariosæ v. colorate, calyce multo breviores, deciduz. Squame 
calycis breves, apice palmatim setosæ, duas tertias calycis ob- 
* It will be observed that I do not concur entirely with M. Ch. 
Nandin in his generic ch ter of Osbeckia, given above, p. 130, which 
in several points is not applicable to the majority of the Asiatic species: 
These, whether as genera or sections, must surely be distinguished t 
the majority at least of the American ones. 
