t$ DIANDRIA. MONOGYNIA. 



of this plant menticned by Mr. Piirsh, Vol. 1 p. 10. with 

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

 ther species called Veronica Sibirica, hihabiting 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; the upper lamina smaller than the rest. 

 Filaments incurved, shorter than the corolla, 

 (appendiculate at the base?) Capsule nearly 

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

 striate. 



Small, subaquatic, herbaceous plants, with filiform 

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

 ternately disposed; with opposite, entire and somewhat 

 orbicular leaves, longitudinally nerved. (A North Ameri- 

 can genus.) 



Species. 1. M. orbiadaUnn. 2. * emarginatnm. Leaves 

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

 sile. Elliott. 



Obs. This genus has considerable afiinity to Centun- 

 cuius, 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-clett and equal. Filaments 4, — 2 fertile, the 

 other 2, for the m^)st 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 

 JMonniera, now a distinct genus, the corolla is nearly 

 equal, and the dissepiment parallel with the valves. In 

 some of the species, (as the G. sphwrocarpa and the G. 

 aurea of Mr. Klliott, the 2 barren filaments are want- 

 ing; and in the G. megalocarpa of E. as well as the G. 



