352 



SUMMAKIES OF PLANT CHARACTERS, ETC. 



Table I. — Continued. 



Cypripedium lathamia- 

 num, microscopic 

 characters: 



Leaf: 



Upper epidermis: 

 Thickness of walls 



at apes 



Length of cells at 



apex 



Width of cells at 



i-2 la 



ra 03 



CQ CQ 



apex 



Thickness of walls 



middle 



Length of cells at 



middle 



Width of cells at 



middle 



Length of cells at 



base 



Width of cells at 



base 



Lower epidermis: 

 Length of cells at 



apex 



Width of cells at 



apex 



Number of stomata 



at apex 



Length of cells at 



middle 



Width of cells at 



middle 



Number of stomata 



at middle 



Length of cells at 



base 



Width of cells at 



Number of stomata 

 at base 



Leaf, transverse sec- 

 tion: 



Depth of cuticle 

 wax 



Depth of upper epi- 

 dermal cells 



Depth of cuticle on 

 lower epidermis. . 



Depth of lower epi- 

 dermal cells 



Width of lower epi- 

 dermal cells 



Depth of midrib 

 bundle 



Width of midrib 

 bundle 



Thickness of trans- 

 verse section at 

 midrib 



Flower stalk : 

 Epidermis at top: 



Length of cells. . 



Width of cells. . . 



Kind of hairs pre- 

 sent 



Number of hairs. 



Length of pointed 

 hairs 



Color 



A B S 



+ 



9 



+ 



i 



a 



-l-9=d' 



+ 9=cf 

 -l-c? 





+ 



-t-cf 

 -1-9 



4-cf 



+ d' 



+ 9 

 -l-9=c? 



+ d' 



