424 FLORA NIGRITIANA. 
has larger leaves, which are rough on both sides. The flowers 
are also larger, and the calycine teeth longer. The stipular cilie 
are occasionally expanded into short linear leaves. 
2. Diodia maritima, Schum.—DC. Prod. 4. p. 564.—On the 
Nun River, Vogel; Senegal and Guinea. 
3. Diodia breviseta, Benth.; caule scandente, ramis tetragonis, 
angulis pubescentibus, foliis ovali-lanceolatis oblongisve utrin- 
que acutatis scabris, stipularum setis fructu brevioribus, ver- 
ticillis multifloris, calycis laciniis 4 reflexis fructu oblongo 
levi ecostato subtriplo brevioribus.— Fernando Po, Vogel. 
Very near to the West Indian D. scandens and D. sarmen- 
tosa, differing chiefly in its numerous small fruits, with a much 
thinner pericarp. 
4. Diodia (Hexasepalum) vaginalis, Benth.; procumbens, gla- 
bra, folis sessilibus oblongo- v. lineari-lanceolatis rigidis, 
ciliis stipularibus rigidis subdilatatis, fructibus oppositis P 
dorso compressis acute costatis calycis laciniis subsenis Coro- 
natis.—At Grand Bassa and on the Nun, creeping in the 
sands, Vogel. : 
Folia subbipollicaria, 2-3 lin. lata, basi interdum ad margines 
brevissime ciliata, costa crassa subtus prominula. Stipularum 
vaginz 2-3 lin. longs, nune internodiis longiores subimbri- 
cate, nune dissite ramo inter nodos compresso-tctragono ; 
ciliz rigide, acute, interdum subfoliacez, circa 2 lin. longs. 
Corolla 6 lin. longa, fauce ampla. Fructus dicoccus, COCOS 
a dorso valde compressis, lateribus suberoso-dilatatis, margt- 
nibus acutis, dorso tricostato. Semen compressum, prope 
basin affixum. Embryo fere albuminis longitudine, T4- 
dicula recta cotyledonibus sublongiore, ad basin fructus 
spectante. 
This agrees with De Candolle's description of Hexasepalum 
angustifolium, from Mexico, in every respect but in the leaves 
being much broader. Although in habit it is in some measure 
intermediate between Diodia and Hydrophylaz, yet there does 
not appear to be sufficient in the size and more corky Con 
sistence of the fruit to separate it generically from Diodia, 
which contains other species with five or six teeth to the calyx. 
