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178 



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179 



180 



178. Lodia purpurata. Transverse section of pseudobulb at middle, showing deep epidermis, deep cuticle, elongated 



thick-walled cells of two layers beneath epidermis. 



179. Cattleya mossicE. The same, showing shallower epidermal cells, cuticle as deep as in L. purpurata, cells of two 



layers beneath the epidermis not elongated and only those of first layer have thickened walls. 



180. Lodia-Caitleya canhamiana. The same, showing epidermal cells, deeper than those in C. mossice but not quite 



as deep as those in L. purpurata; cuticle, deeper than in either C. mossixB or L. purpurata; and two 

 layers beneath the epidermis not as elongated nor as thick-walled as in L. purpurata, but distinctly 

 more elongated and thicker walled than in C. mossice. 



181. Loelia purpurata. Transverse section of leaf near apex, showing slightly elongated cells of first layer of aqueous 



tissue at midrib, and large bundle. 



182. Cattleya mossiw. The same, showing more elongated cells of aqueous tissue and rather small bundle. 



183. Laslia-Cattleya canhamiana. The same, showing cells of aqueous tissue of same length as in C. mossice and smaller 



bundle than in either C. mossioe or L. purpurata. 



