574 FLORA NIGRITIANA. 
This is certainly the species so widely diffused in Africa 
which goes usually under the name of S. saccharatum, but I 
have much doubt whether it be more than a large variety of 
S. Halepense. It grows to the height of six or eight feet, with 
very ample spreading panicles; the Cape Coast and Cape 
Palmas specimens are from cultivated grounds, and have the 
fertile spieule about 3 lines long. The Nun specimens, from 
the inundated banks of the river, are still more luxuriant, and 
their large spikelets, about 4 lines long, clothed with red-brown 
hairs, give them a very rich aspect. 
Several varieties of the S. vulgare, Linn., are generally cul- 
tivated in Guinea, as well as the S. saccharatum. 
There is a specimen of a grass in Don’s herbarium from 
Sierra Leone which I am unable to refer to any genus known 
to me, but the whole of the flowers having fallen away, with 
the exception of the remarkable glume, I am unable to de- 
scribe it. 
The Ferns and Cryptogamic plants brought by the Expedition 
are too few in uumber, and of too little interest, either to give 
any idea of the cryptogamic vegetation of the country, or to 
make any detailed enumeration advisable on the present 
occasion. 
ADDENDA ET CORRIGENDA. 
Tue difficulty of searching out from a great variety of works, 
both general and special, the published species belonging to @ 
particular region, more especially when the plants are not 
arranged in such works according to their natural Orders, may 
have been the cause of a considerable number having beet 
overlooked. Whilst the preceding pages have been going 
through the press, I have discovered a few which have been 
omitted in their proper places, or which have been since pub- 
lished, and I take this opportunity of correcting a few material 
errors of copying or of the press, 
P. 122.1. 28. For Mysicarpus, read Alysicarpus. 
