lobes, and the fourth smaller and apparently abortive; one 

 is situated within the keel of the lower lobe : this has a 

 thickened, clavate filament, and a small, ovate anther, 

 whereas the others have filiform filaments and oblong 

 anthers. Germen cylindrical, one-celled, many seeded : 

 the seeds attached to the sutures of the valves : Style fili- 

 form, shorter than the germen : Stigma two-lobed. 



Two species of this Genus were referred by Linn^us to 

 Exacum, a third constituted the Genus Canscora of La- 

 marck ; but this was so imperfectly defined, that the MSS. 

 name of Pladera of Solander has been preferred, establish- 

 ed by Roxburgh in the Fl. Indica, and adopted by Chamisso 

 and Schlechtendal in the Linn^ea, and by Sprengel in his 

 Systema Vegetabilium. Five species are described by Dr. 

 Roxburgh. The present one seems to accord with his P. 

 decussata, an inhabitant, indeed, of Bengal ; whereas, our 

 plants, which flowered in the stove of the Glasgow Botanic 

 Garden, in July, 1830, were raised from seeds communicated 

 by Dr. Lindsay, from Nepal. 



Fig. 1. Flower. 2. Upper portion of the Corolla, cut open to show the 

 Stamens. 3, 4. Stamens. 5. Pistil. 6. Section of the Germeu. — Magni- 

 fied. 



