Plate I 



PLATE I 



Figure 1.— Longitudinal section of stem-apex, sliowing growing-point 

 and manner of development of leaves and axillary buds; L ', 

 /.'^ i"i, &c., primary leaves; /i"), /jd), &c., l-fi^\ 4(11), &c., 

 leaves of axillary buds of O, i", &c.; G P, main growing- 

 point of stem; gpiC^), gpti^\ &c., growing-points of axillary 

 buds ; ab, line where such a cross section as is represented in 

 Plate VII, figure 43, might be cut perpendicular to jjlane of 

 paper, x 30. 



Figure 2.— Sketch from living specimen, showing vegetative branch 

 system in a young stage; /, //, ///, IV, &c., primary leaves. 

 i natural size. 



Figure 3.— Cross section of axial bundle of stem, showing endo- 

 dermis, sieve tubes, central cavity formed by disorganization 

 of tracheae, &c. x 300. 



Figure 4.— Cross section of stem, x GO. 



Figure 5.— Cross section of epidermis, cortex and endodermis of 

 stem. X 212. 



