Exacum. tetrandria monogynia. 39? 



bases joined by a connecting membrane. Spikes terminal, 

 generally three-fold, there being- a larger, and longer in the 

 centre, with a smaller on each side ; long, slender, hairy, 

 lengthening", and blossoming for three months. Floivers ge- 

 nerally three-fold, sub-opposite, sessile, very numerous, small, 

 pure white, and of a pleasant smell. Bractes lanceolate, one 

 under each flower. Calyx inferior, four, rarely five-toothed, 

 villous. Corol one-petalled, hypocrateriform. Tube the 

 length of the calyx ; mouth villous, border of four, rarely 

 five, rounded, equal segments. Filaments short, inserted 

 near the base of the tube of the corol. Anthers broad, sagit- 

 tate, hid in the tube. Germ conical. Style short. Stiyma 

 large, oblong, bisulcate, even with the tops of the anthers. 

 Capsule ovate-oblong, two-celled, two-valved. Seeds minute, 

 numerous, imbricated, compressed. 



Obs. The whiteness of the leaves, and young shoots of this 

 plant, independently of its numerous, beautiful, small, fra- 

 grant, pure white flowers, makes it highly ornamental, parti- 

 cularly amongst plants with darker foliage. 



EXACUM. Schreb. gen. N. 185. 



Calyx four-leaved. Corol salver-shaped. Capsule supe- 

 rior, two-celled, two-valved. Seeds many. 



1. E. bicolor. R. 



Annual, erect, four-sided. Leaves sessile, ovate, five-nerv- 

 ed. Flowers axillary ; apices of the segments of the corol 

 blue, the rest white. Anthers erect. 



A native of Cuttack, where it appears during the cool sea- 

 son. 



Root almost simple. Stem erect, branchy, four-sided ; an- 

 gles somewhat winged, from one to two feet high. Leaves 

 sub-sessile, opposite, oval, five-nerved, smooth, size very vari- 

 ous. Floral leaves small and narrow. Flowers axillarv, so- 



