» DIANDRIA. MOXOGYNIA, 



ofthis plant menti«)ned by Mr. Pursh, Vol. 1. p. 10. with 

 purple flowers, may perhaps prove distinct. There is ano- 

 ther species called Veronica Sibiricay inhabitinj^ Dauria, 

 in which the stamina and pistillum are double the length 

 of the corolla. 



13. MICRANTHEMUM. Michaux.. Globi- 

 FERA. Gmelin, 



Calix 4 -parted. Corolla 4 -parted, almost bi- 

 labiate; tbe upper lamina smaller than the rest. 

 Filaments incurved, shorter than tlie corolla, 

 (append iculate at the base?) Caj)sule nearly 

 globular, 1-ceIled, 2-valved, many-seeded. Seeds 

 striate. 



Small, subaquatic, herbaceoiis plants, with filiform 

 creeping stems; very small, soltary, axillary flowers, al- 

 ternately disposed; with opposite, entire and somewhat 

 orbicular leaves, longitudinally nerved. (A North Ameri- 

 can genus.) 



Species. 1. Jll. orUcidatum. 2. * emarginatntn- Leaves 

 larger, oval or obovate, somewhat emarginate, flowers ses- 

 sile. Elliott. 



Obs. This genus has considerable affinity to Centun- 

 ciihis, but the capsule does not divide hemispherically, 

 and it belongs to a distinct Natural Order. 



14. GRATIOLA. L. (Hedge-hyssop.) 



Calix 5-parted, often bi-bracteate at the base. 

 Corolla tubulose, resupinate, and sub>bilabiate; 

 the upper lip, 2-lobed or emarginate; the lower 

 3-cleft and equal. Filaments 4, — 2 fertile, the 

 other 2, for the most part, sterile. Stigma 2- 

 lobed, or bi-labiate. Capsule ovate, 2-celled, 2- 

 valved, many-seeded. Dissepiment contrary to 

 the valves. 



Hebaceous, leaves opposite; peduncles solitary, axilla- 

 ry, 1 -flowered. Character drawn from G. officinalis. In 

 jyionjiiera, now a distinct genus, the coruUa is nearly 

 equal, and the dissepiment parallel widi the valves. In 

 some of the spc-cies, (as die G. sphcerocarpa and the G. 

 '■ aurea oi Mr. Klliot., ',lu 2 barren filamtnts are want- 



ing; and in the G. me^alocarpa of E. as well as the G. 



