DIDYNAM1A ANGlOSPERMIA. 
105 
To this plant the description of the preceding will apply almost entire- 
ly. The Leaves are narrower, less nerved and denticulate, but mere- 
ly in proportion to their size. The Peduncles are shorter, and Mich, re- 
marks that the corolla is larger. These two species require to be further 
examined. They differ in appearance very much from the plants with 
which they are associated-— they are both very fragrant, particularly when 
bruised, so that you can discover them when riding through the grounds 
in which they grow by the aromatic odour which they exhale under the 
hoofs of your horses. In this respect they differ very much from the in- 
sipid earthy smelling species of Gratiola, Lindernia and other plants 
to which they are allied. They will perhaps constitute a distinct ge- 
nus. 
From character and from tradition I can have no hesitation in re- 
ferring to this plant the Obolaria Caroliniana of Walter — with the Obo- 
laria Yirginica he appears to have been unacquainted. 
Grows in the pine barren ponds of the middle country, rare in the im- 
mediate neighbourhood of the ocean. 
Flowers July — September. 
4. Micrantha. 
H. glabra, succu- 
lenta ; foliis arete ses- 
silibus, ovatis ovali- 
busque, obtusis, inte- 
gerrimis, striato-ner- 
vosis ; pedunculis fo- 
lio brevioribus ; ca- 
lyce 5-phylIo ; stylo 
bilido. 
Pursh 2. p. 418. 
Gratiola repens ? Sp. pi. 1. p. 103. 
A small plant prostrate and creeping. Leaves sometimes nearly round. 
\ er y glabrous, half embracing the stem. Peduncles axillary, short. The 
three outer leaves of the Calyx large, the two interior subulate. Flowers 
very small, white. 
I neglected to notice, and my specimen will not now determine, whether 
the corolla is 4 or 5 cleft. The calyx however separates all of the plants 
placed in this genus, very distinctly from Lindernia. 
Grows on the margins of fresh water rivers in soils subject to inunda- 
tion. 1 o me a rare plant, I have onb^met with it upon tbe’fcanks of the 
Ogeechee river. 
Flowers September-— October. 
Glabrous, succu- 
lent ; leaves closely 
sessile, ovate and o- 
val, obtuse, entire, 
nerved ; peduncles 
shorter than the 
leaves; calyx 5-cleft ; 
style 2-cleft. 
VQK. IT. 
o 
