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SCIENTIFIC AND APPLIED PHARMACOGNOSY 



or projections in the neighborhood of the stomata and veins, con- 

 sisting of cork cells 1 ; midrib usually with a small groove on one side; 

 veins of the first order diverging at an angle of about 55, running 

 to within 1 mm. of the edge, where they anastomose, forming a vein 

 parallel with the margin; petiole 2 to 3 cm. in length, flattened and 

 somewhat twisted; glandular-punctate; texture coriaceous; odor 

 slightly aromatic; taste aromatic, somewhat bitter and cooling. 



FIG. 201. Eucalyptus Globulus; A, young branch with opposite, oblong, dor- 

 siventral, sessile leaves. B, flowering branch with scythe-shaped, petiolate, 

 scattered, bilateral leaves. C, flower-bud showing the detached upper 

 portion of the perianth (operculum or lid) which covers the stamens until 

 they are fully mature. Z), longitudinal section of a flower-bud showing 

 incurved filaments which curve outwards when the flower matures. E, 

 stamens in two views. F, truncated capsule or pyxis. G, two fertile seeds. 

 H, sterile seed, seeds of this kind usually being most numerous. J, two 

 germinating plants. A and F, after Niedenzu; G and J, after Mtiller. 



Inner Structure. The cells of the ventral surface have a thick 

 cuticle, covered with wax; the mesophyll consists mostly of a number 

 of layers of palisade cells among which are distributed large, spher- 



1 These corky patches are due to the concentration of the salts in the leaves, 

 some of the constituents setting up an irritation with subsequent changes in the 

 tissues. 



