508 FLORA NIGRITIANA. 
acumine lato obtuso v. retuso, ad margines serraturis obtusis 
nonnunquam glanduliferis notata, versus basin angustata, 
ima basi obtusa, utrinque viridia, penninervia et transverse 
reticulato-venosa ; vene primarie 2 interdum more generis 
ad basin folii opposite validioresque, seepius tamen obsolete 
et glandule in earum axillis omnino deesse videntur. Sti- 
pule rigide, subulate, petiolo breviores, decidus. Flores 
dioiei. Spice mascule 4-5-pollicares, in paniculam graci- 
lem dispositz. ^ Spicam femineam unicam vidi in altero 
specimine 2}-pollicarem jam fructiferam, carpellis 2 v. ra- 
rius 3. 
Jussieu refers to two Senegalese and Guinea species, whether 
the same or not as either of the above, I do not know. There is 
also in Vogel's collection from Fernando Po, a fragment, con- 
sisting of a bit of stalk and a single leaf, which may be that of 
another Alchornea. 
A specimen of a branching shrub, with small oval or obovate 
leaves and a few remains of fruit, gathered by Vogel, at Stir- 
ling, on the Quorra, indicates an affinity to Alchornea or Cla- 
oxylon, but is insufficient to determine the genus. 
Pycnocoma (gen. nov.) e tribu Crotonearum. 
Flores monoici. Masculi racemosi. Calyx 5-partitus laciniis 
zstivatione subvalvatis, per anthesin arcte reflexis. Corolla 
nulla. Stamina numerosissima, disco carnoso pulvinato m- 
serta; filamenta filiformia libera apice incrassata ; anther 
parvee globose, loculis parallelis ad apicem filamenti transverse 
adnatis. Flos famineus ad apicem racemi solitarius, sessilis. 
Calyx 5-partitus, laciniis patentibus. Corolla nulla. Ova- 
rium sessile, triloculare, ovulis solitariis. Stylus erectus, ad 
medium trifidus, ramis recurvis summo apice peltato-stigma- 
tiferis. Capsula tricocca, coccis (bivalvibus?) dorso obtuse 
bicostatis. 
1. Pycnocoma macrophylla, Benth.—Fernando Po, Vogel. 
Arbor 8-pedalis, trunco tenui nudo coma densa foliorum termi- 
nato. Ramuli (crassitie digitis minoris) glabri. Folia ad 
