FRUITS. 



157 



PLATE LXIX. 



FIG. 79. Powdered Colocynth Fruit (x 240.) 



CO, Cotyledon. 



col, Outer parenchyma of rind, often collenchymatous. 



e. e', Outer sclerenchymatous layer of mesocarp of rind. 



ffv, Fibro-vascular bundle from pericarp. 



I, Bast tissue of bundle. 



me, Outer portion of mesocarp. 



mi, Inner layer. 



m'i', Cells of the latter, isolated. 



pa., Palisade cells of seed. 



scm, Sclerenchymatous cells of mesocarp. 



tc Epidermis of cotyledons. 



tsc, Sclerenchyma of seed-coat. 



I's'c', The same, outer rows. 



tp, Reticulated and spiral cells of seed-coat, in section, 



t'p', The same, surface view. 



tr, v, Vessels, tracheids, etc. 



