150 SCIENTIFIC AND APPLIED PHARMACOGNOSY 



'.* /E 



FIG. 66. Matico. A, branch with leaves and flower spikes (/); B, section of 

 leaf showing one of the truncate teeth, fibro vascular bundle (v), oil-secretion 

 reservoirs (o); C, transverse section of leaf near two veins, showing upper 

 epidermis of several layers (e), palisade cells (p), tracheae (t), sieve (s), col- 

 lenchyma (c), loose parenchyma containing crystals of calcium oxalate (ca), 

 hairs (A); D, transverse section of leaf showing in addition an oil-secretion 

 reservoir (o); E, portion of lower epidermis showing three stomata; F, por- 

 tion of upper epidermis; G, portion of leaf showing the glandular-punctate 

 character due to the oil-secretion reservoirs (o); H, non-glandular hairs; /, 

 stamen; J, pollen grains, which are about 0.010 mm. in diameter; K, prisms 

 of calcium oxalate; L, a hair from the perianth; M, tracheae from the stem 

 with spiral and annular markings. 



