~ ‘ 
~ R42 - | DIOECIA, DECANDRIA. - 
_ ago. Aret stamina also really hictbdaiebeee? and 8 te 
22} “al d upon an axis forked at its summit!” Oss. 
_ Seeds hirsute; capsules globose and recurved. Radicles 
- _ pubescent. 
eo * UDORA. Riopet, Michaux. 
Spathe bifid.—-Mase. Calix 3-parted. Corol- 
fa of 3 petals. Stamina 9, 3 of them interior. 
Fem. Calix 3-parted, tube very long. Petals 
3. 
ed. 
Seeds cylindric. 
_ tomous; leaves entire, v. 
> very small and evanescent, ‘the female emerg- 
“ing; “the male migratory, breaking off connection usually 
3 with the parent plant, it instantly expands to the light, 
‘ ' the anthers also burst with elasticity and the granular 
pollen vaguely floats upon the surface of the water. 
= Grains. of pollen didymous, or 4-lobed, lobes nearly sphe- 
_ Fical. Gemmule of the seed inverted. 
J. canadensis. Leaves verticillate in 3s and 4s; oblong- 
S awirks minutely subserrulate, partly obtuse. 
Elodea canadensis. Mich. Serpiculaverticillata, Mubl. 
Catal. p. 84.S. occidentalis. Pu. 1. p..33. Has. In still 
waters, from Canada to Virginia. The plant without 
flowers resembles an aquatic moss (such as Tetraphis pel- 
filiform, 4to 12 incheslong. For a figure of the seed of 
is which appears to hold an intermediate station 
he allisneria and Hydrocharis, see Annales du Mu- 
of : a Jungermannia; pee of the male flower sign 
‘e-spathulate; stigmas of the female 3, ligulate, reflected 
n d bifid, partly crested. 
~ Serpicula verticillata of Roxburg, is probably a se- 
ond species of this very distinct genus. 
ce 
ee X.—DEC ANDRIA, 
a 
Sterile filaments 3. Utriculus about S-seed- — 
Asubmersed aquatic; roots fixed; stem Sfareby dicho- | 
iMeniated | in 3s and 4s; flowers — 
 ducida.) Utriculus 1-celled, conic. Tube of the calix — 
17. p. 232. t. 1. f. 30. Flowers scarcely larger than 
