298 BOTANY. 
ris, and Hydrilla in 1812 (Mem. Inst. 1811, pt. 2, p. 1), and had 
previously described the genus Elodea in 1803 (Mich. Fl. Bor 
Amer. i. 20). In the latter work he refers E. guyanensis to that 
genus, as well as E. canadensis, and places them as hermaphrodite 
plants in the Linnean Class and Order Triandria Monogynia. In 
both of these places he states expressly that Elodea has hermaph- 
rodite flowers. In the Mem. Inst. he says that Anacharis and 
wrong, 
and Canada ; and his Æ. guyanensis and the E. granatensis of Hum 
boldt as also hermaphrodite, and in that he is correct. 
chaux’s work in 1803 (but by name only ), does not seem to 
published any description of it until the appearance of hi 
em. Inst. ), which was issued in 1814, but communicate 
the Institute in 1812. Pursh called the Canadian plant Sara 
occidentalis in 1814 (El. Amer. Septen. i. 33), and expressly § 
acharis. He says,“ The staminate flowers ( which are rare)" 
commonly break off, as in Vallisneria, and float on nee we 
where they expand and shed their pollen around the 
the fertile flowers.” . ea 
It appears from’this that there are two series of plants | 
power which each node of the stem possesses of P 
plant if detached from the rest. Bae of 2 
But even if it be considered that the diccious st! pais 
charis and Hydrilla is not sufficient to separate thom- 
maphrodite Elodea of South America (Apalanthe, + 
