PLATE 33 



Kill 



lit!) 



200 



20? 



196. Millniiiii njilliirin. Transverse section of leaf at equal distances from apex and base, showing elongated keel, 



elongated cells below upper epidermis, large oval bundle. 



197. Miltonia radii. The same, showing much shorter keel, more acute angle at midrib, less elongated cells below 



the upper epidermis, and a small almost circular bundle. 



198 Millnnia bltuana The same, showing keel fairly intermediate, also angle at midrib fairly intermediate, elon- 

 gated cells of layer beneath upper epidermis as long as in M. rirzlii, oval bundle nearly as large as in 



199. Phnius grandifoUus. Transverse section petiole of mature leaf, showing midrib bundle with upper and lower 



sclerenehyma sheaths. 



200 Phaitts wallichii. 'The same, showing midrib bundle with continuous sclerenchyma sheath. 

 om D],,-,. O j,.,^,-j,, TV,O , a ctimirincr midrib hiiTullp with unner nnd lower sclert-nclivma sheaths, but more nearly 



