DIANDRIA. MONOGYNIA.. 9 



sphcerocarpa, the capsule is nearly globular; moreover, the 

 G aciiminataha.s 4 fertile stamens! 



Species. § 1. v.'ith 2 bracies at the baseof the calix. — 1. 

 G. vir^^liica. 2. aiirea. S.piiosn. 4. aphcerocnrpa — § 2. without 

 bractes. — 5. qiiadridentata. 6. acuminata. 7. tetragona. 8. 

 jnegalocarpa* 



Obs. Of 22 species of this genus now described, 8 are 

 natives of the United States. — 1 of Europe, neariy allied to 

 the G. anrea and G. virginica. — 1 in Peru. — 2 inihe West 

 Indies, and 10 in India. A majority of the North Ameri- 

 can species are confined to the warmer states; so that the 

 genus Gratiola, almost equally divided betwixt India and 

 North .\merica, originates apparently within the tropics, 

 and in the latter continent extends chiefly to the 40ih 

 degree of north latitude. 



-io, LIN DERMA. L. 



Calix 5-[)arted, nearly equal. Corolla tubu- 

 losp, bi-labiate; upper lip short, emarginate; 

 lower trifid, unequal. Filarnents 4* the 2 lon4i;er 

 forked, and sterile. Stigma bilamellate. Cap- 

 sule 2-ceIIed, 2-vaived; seminiferous dissepiment 

 parallel with the valves. 



Herbaceous plants with opposite leaves, and generally 

 solitary, axillary flowers, gieatly resembling the preceding 

 genus, to which it is very closely allied; though well dis- 

 tinguished by having 2 of the Jilaments hijid and for the 

 most part sterile^ except perhaps in the L. Pyxidaria the 

 Linnaean type of the genus, which is described as having 

 the 2 inferior filaments terminated by a tooth or process 

 passing beyond the anther which is almost laterally in- 

 serted (or more probably situated upon another shorter 

 stipe.) The Lindernia is also distin^^uishedfrom the preced- 

 ing genus by its parallel dissepiment. There is indeed 

 already a L. dianthera, discovered by Swartz in the West 

 Indies; and Mr. Elliott remarks that there are only 2 an- 

 thers in the L. dilatata and L. attemiata of Muhlen- 

 burgh's Catalogue, and ihat in the latter species the infer- 

 tile filaments are villous. Besides these, there is another 

 species; viz. the L. vionticola of the hills of New Hamp- 

 shire. 



Oes. The genus IJndemia, except the L. Pyxidaria of 

 Europe, appears eniirely confined to North America. The 

 X. Japonica of Thunberg, described as having terminal 

 racemes, cannot certainly appertain to this genus. The 



