1S2 
ORIGINAL COMMUNICATIONS. 
vary in shape and size, which the leaflets manifest, and it 
may be doubted whether the invariable existence of a 
glandulous petiole has much greater claim to confidence. 
Upon referring to the plates connected with the memoir of 
each, it will be perceived that the figure given by Delile is 
evidently taken from a plant in an advanced stage of maturity, 
after the flowers had disappeared, the legumes of which were 
well formed and had attained their full size and consistence. 
But the drawing of Nectoux is taken from a specimen to which 
the flowers were still attached, and when those legumes which 
had been fecundated were not more than half or two-thirds 
advanced. The impression is also given by this representa- 
tion that it was made from a specimen not the most vigorous, 
but on the contrary somewhat impoverished and stinted. 
Upon examining the leaflets of the Alexandrian Senna which 
comes to this market, all varieties of shape and size are met 
with. By far the most frequent however of the acute are 
found such as answer to the figure of Nectoux, but at the 
same time there are a certain number in each quantity which 
correspond to that of Delile. It is therefore plain that in the 
series of varieties, the one selected an individual specimen as 
the representative of the type, at one end or the commence- 
ment of the series, while the other selected from the opposite 
end or the termination of it. 
If the two plants described above are, as we believe, the same, 
and little doubt can exist that such is the case, we may now 
proceed to the C. lanceolata of Forskall. The assertion of 
Nectoux that his plant is identical with the one described by 
Forskall has been noticed. The description is as follows: 
Cassia lanceolata, foliolis 5 jugis, lanceolatis aequalibus. 
Description. — Foliola pollicaria, — breviter petiolata,lanceo- 
lata, viridia, glandula sessilis supra basin petioli. Pedunculi 
racemi terminales longi, pallide flavi. Legumina linearia, vil- 
losa, compressa incurva, matura non vidi. Surdud. Arab. 
Suna. Etiam circa Mor frequens. 
Certiorem mihi fecit quidam hanc Cassiam veram esse Sen- 
nam Meccensem, cujus folia Kahirae huic nostra? simillima 
