576 FLORA NIGRITIANA, 
belongs to the Order of Hydroleacee, to be inserted’ next to 
Convolwulacee. 
P. 496. To Polygonacee, add: C. Koch has just published 
(Linnea, v. 22. v. 205) a Polygonum tropicum, from Senegal; 
which is probably the same as P. exiguum. 
P. 255. At the end of Dicotyledones, add: Thonningia san- 
guinea, Vahl, from Guinea, belonging to the anomalous Order, 
Balanophoree. 
P. 428. Add: Pontederia natans, Beauv., to the described 
. Monocotyledons of West Tropical Africa. 
P. 584. Amomum Grana-Paradisi. Since this article has been 
in the printer's hands I have seen three papers of Dr. Pereira's 
published in the Pharmaceutical Journal, vols. 2 and 6, which 
show that, after a very careful investigation, he has come to the 
conclusion that the Amomum seeds known in this country a8 
Guinea Grains, are the produce of one species, including the 
A, Grana-Paradisi of Smith and the A. Melegueta of Roscoe: 
This species is evidently the same: which both Afzelius and 
Vogel state to be common all over the coast. As it is more 
generally known as the Malaghetty Pepper than the Habzelia 
Aithiopica, several observations made by Dr. Hooker on the 
importance of that drug, must be considered as applying more 
especially to this plant. There is no doubt, however, that the 
seeds of both these widely different plants and the fruit of a 
third, as different from either, the Cubeba Clusii, p. 514, have 
all been known more or less under the name of Guinea Pepper. 
The total number of species enumerated from the collections 
made in West Tropical Africa by the officers of the Niger Expe- 
dition, and by Don and others, amounts to 974, of which 
Dieotyledons 803, and Monocotyledons 171. The principal 
Orders are among Dicotyledons : Leguminose 113, Rubiaceae 97, 
Composite 40, Acanthacee and Eupborbiacee 37 each, Convol- 
vulacee and Urticee (including Artocarpee) 27 each, Malvacee 
and Melastomacee 23 each ; none of the others reaching 20. 
Among Monocotyledons : Gramineg 79, Cyperacee 39, Com- 
melynee 16, none of the others reaching 10. 
