flowers ; upper and lower shorter. Jertile flowers bright 
blue; perianth obovoid-oblong, a sixth or a fifth of an inch 
long, distinctly constricted at the throat; teeth a little 
broader than long, white, falcate when the flower is fully 
expanded. Stamens inserted at the middle of the perianth- 
tube, slightly biseriate. Ovary globose; style as long as 
the ovary. Sterile flowers twelve to twenty, dense, sub- 
sessile, tinged purple.—.J. (. Baker. 
Figs. 1 and 2, Flowers from different parts of the raceme; 3, perianth cut open 
to show the stamens; 4, anther, front view; 5, anther, back view ; 6, pistil; 7, 
horizontal section of ovary :—all more or less enlarged. 
