FLORA NIGRITIANA. 527 
description confirms Gzertner’s assertion that this Palm is diœ- 
cious; although Brown and others had satisfactory evidence of 
the male and female spadices being produced on the same stem. 
But although the Eleis is placed in Diæcia in Schumacher’s 
Beskrivelse, yet in Thonning’s own printed description, the 
point in question is not alluded to. 
XCVII. PANDANEX. 
The Pandanus Candelabrum, Beauv., common along the coast, 
was observed also by Vogel, but no specimen was gathered. 
XCVIII. AnoIDEX. 
l. Pistia Stratiotes, Linn.—Abdh, Vogel. 
The fine set of specimens, as to leaf and flower, collected by 
Vogel, still further confirm the opinion stated, amongst others 
by myself, (Bot. Sulph. p. 170), that the nine supposed species 
of Pistia are really forms of one species, common in most of the 
warmer regions of the globe, and very variable, like the gene- 
tality of aquatic plants. 
l. Culeasia scandens, Beauv.—Kunth, Enum. 8. p. 46.—On 
the Quorra, opposite Stirling, Vogel ; Oware. 
1. Philodendron ? sp., not in a state to determine.—Grand 
Bassa, Vogel ; Senegal, Heudelot. 
The remaining Aroidee published from West Tropical Africa, 
are Stylocheton hypogeum, Lepr., from Senegal; Pythonium ? 
ookeri, Kunth, (Caladium petiolatum, MHook.), from Fer- 
nando Po ;* Amorphophallus difformis, Bl, from Oware; A. 
consimilis Bl, and A.? Fontanesii, Kunth, from Senegambia. 
There is also a leaf of a cultivated Colocasia from Sierra Leone 
m Don’s collection, probably the same as the one mentioned by 
Thonning under the old name of Caladium esculentum. 
XCIX. TYPHACEZ. 
The Typha angustifolia, L., is found in the waters of the 
* In Kunth’s Enumeratio, this island is, by a slip of the pen, stated to 
be off New Guinea instead of Guinea. 
