FLOWERS. 



99 



FIG. 52. Powdered Cusso Flowers (x 240). 



ca, Epidermis of inner sepal. 



c'a', Margin of inner sepal. 



c"a", Epidermis of inner sepal, with fragment of mesophyll. 



cal, Epidermis of outer sepal. 



cal', The same with three forms of glandular hairs, 



cal", Margin of outer sepal. 



cr, Rosette crystal of calcium oxalate. 



er, Inner epidermis of calyx tube. 



f, Lignifled fibre. 



g, Small unicellular gland. 

 g', Pluricellular gland. 



g", Large unicellular gland from outer calyx. 

 I, Bast tissue. 



p, Unicellular, simple, conical hairs, entire or broKen very nume- 

 rous in this powder. 



pc, Cortical parenchyma from floral axis, with numerous crystal . 

 pe, Epidermis of a petal. 

 tr, Tracheids from the veins of flowers. 

 v, Vessels from floral axis, 



