Lid 
226 Botanical Writings of Rafinesque. ; 
of London in 1810; and Monography of the genus Callitriche, 
increased to sixteen species, sent in 1812 to the Linnean Society. 
The two first named articles comprise nearly all that Rafinesque 
published on North American botany previous to 1815, and con- 
sequently anterior to Pursh; and justice to the author perhaps 
requires that they should be noticed somewhat in detail. He 
states that his first proposed work, to be entitled Nova Genera et 
Species Plantarum Boreali-Americanum, will comprise, in addi- 
tion to all the new genera and species discovered since the time of 
Linneus, the ten new genera which are indicated in the annexed 
essay, [No. 2,] aud fourteen more which he mentions as follows. 
[The remarks in brackets are of course our own. 
“ Geanthia (colchicoides, ) differs from Colchicum merely in the 
number of the stamens, which are only three iu Pennsylvania.” 
[There is little risk in asserting that no such plant exists in the 
United States. The name again occurs in the list of twenty new 
genera published in the Specchio delle Scienze, &c., which we 
have pot seen. | 
‘* Micrampelis (echinata, ) differs from Momordica in the fruit, 
which is inflated, muricated, 2-3 locular, 2-3 spermous; in Penn- 
sylvania.” [We have in vain searched the subsequent works of 
Rafinesque for any farther notice of this genus. Perhaps the 
Echinocystis, Torr. & Gr. was intended, but the fruit of that 
plant has four seeds, two in each eell. | 
ai ff Phemeranthus (teretifolius) is very similar to Talinum, and 
_is known by some botanists under the name of J'alinum teretifo- 
fium. Penn. and Carol.” 
>“ Merasperma (dichotoma, bifurcata, cylindral., §c.) belongs to 
the tribe of Conferva, is tubular, inarticulated, with the seeds ad- 
hering to the interior of the tubes. Pennsylvania, &c.” [He 
elsewhere calls this genus Mesasperma. 
“ Heterodon (bryoides, ) small moss with peristome eight dent 
ted, dentatures unequal. It grows in the waters of New Jersey: 
“ Leptuberia (amorpha,) small crustaceous lichen. Penn.” 
“ Heptaria (erecta, cuneata, §c.,) very like to the 7) rremel 
“ Catenaria (arenaria, vagabunda, concatenata, Sc.,) interne 
diary between some Conferve and Fuci. On the sea shores.” 
“ Atheropogon (apludoides,) genus of gramens, near akin t0 the 
Apludo. I found it in Pennsylvania; the name is of Willdenow 
in MSS.” 
” 
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