MACROSCOPIC AND MICROSCOPIC CHARACTERS OF PLANTS. 



827 



COMPARATIVE SUMMARY OF THE CHARACTERS OF THE 



HYBRID CYPRIPEDIUM LATHAMIANUM INVERSUM 



AND ITS PARENT-STOCKS. 



The hybrid was found to be : v 



(1) The same or practically the same as the seed 

 parent : In the length of the ovary ; width of the stami- 

 node ; length of the lower epidermal cells at the middle of 

 the leaf ; shape of the cells and waviness of the walls on 

 the lower epidermis of the petal at the middle. 



(2) The same or practically the same as the pollen 

 parent: In the amount of shortening of the youngest 

 leaf ; width of the anterior sepal ; micro number of cortex 

 layers in the transverse section of the flower-stalk at the 

 middle. 



(3) The same or practically the same as both parents: 

 In the shape of the leaves ; thickness of leaves ; thickness 

 of the walls of the upper epidermal cells at the middle of 

 the leaf ; color of the cells on the lower epidermis at the 

 base of the dorsal sepal. 



(4) Intermediate: In the length of the leaves 9 ; 

 width of the leaves 9 ; size of blotches at the base of the 

 leaf 9 ; length of spotted area at the base of the leaf 9 ; 

 length of the youngest leaf $ ; flowering period 9 ; 

 length of the flower-stalk $ ; color of the flower-stalk 9 ; 

 length of the bract $ ; color of the ovary 9 ; length of 

 the dorsal sepal 9 ; ratio of length to width of dorsal 

 sepal ; shape of dorsal sepal ; color of dorsal sepal ; length 

 of anterior sepal 9 ; color of anterior sepal; length of 

 lateral petals 9 ; width of lateral petals $ ; shape of petals 

 $ ; crisping of dorsal margin of petals $ ; length of label- 



lum 9 ; color of the outer surface of labellum 9 ; color of 

 interior surface of labellum ; shape of staminode 9 ; color 

 of staminode 9 ; thickness of cell walls 9 ; length $ , width 



9 , of the upper epidermal cells of the leaf at the apex ; 

 length of the upper epidermal cells of the leaf at the 

 base 9 ; width of the lower epidermal cells of the leaf 

 at the apex $ ; length of the lower epidermal cells 3 , 

 and number of stomata 9 , at the base of the leaf; depth 

 of the upper epidermis 9 ; depth, and width 9 , of the 

 midrib bundle on the transverse section of the leaf; 

 length of the epidermal cells at the top of the flower- 

 stalk $ ; kind of hairs present S , number of hairs $ , 

 length of pointed hairs $ , length of club-shaped hairs 



9 , and color at the top of the flower-stalk ; width of the 

 epidermal cells at the middle of the flower-stalk 9 ; length 

 of the pointed hairs , length of the club-shaped hairs 9 , 

 and color 9 at the middle of the flower-stalk ; depth 9 , 

 width 9 , of the epidermal cells, and width of cortex 3 , 

 on the transverse section of the flower-stalk ; color of the 

 midrib on the upper surface of the dorsal sepal ; ratio of 

 pointed to club-shaped hairs, length of pointed hairs 9 , 

 and color 9 , on the lower epidermis of the dorsal sepal 



at the midrib ; width of the upper epidermal cells at the 

 base of the dorsal sepal $ ; number of hairs 9 , color of 

 the upper epidermis at the base of the dorsal sepal ; ratio 

 of pointed to club-shaped hairs, length of pointed hairs 

 $ , length of club-shaped hairs $ , and color of hairs, on 

 the lower epidermis at the base of the dorsal sepal ; width 

 of the upper epidermal cells $ , and color at the middle of 

 the petal ; color of the upper epidermis at the base of the 

 petal; length of the hairs 9 , and color 9 , of the upper 

 epidermis of the labellum at the base ; length of the hairs 

 S , and color $ , of the upper epidermis of the labellum 

 at the most anterior part. 



(5) Higher than in either parent: In the width of 

 the dorsal sepal $ ; color of the petals 9 ; width 

 of the labellum 9 ; length $ , width 3 , of the upper 

 epidermal cells at the middle of the leaf; width 9 , of the 

 upper epidermal cells at the base of the leaf; length 9 , 

 of the lower epidermal cells at the apex of the leaf; 

 width 9 = $ of the lower epidermal cells at the middle 

 of the leaf ; width 9 , of the lower epidermal cells at 

 the base of the leaf; depth 9, and width S, of the 

 loweii epidermal cells, thickness of leaf 9 , on the trans- 

 verse section of the leaf at the middle ; width 9 , of the 

 epidermal cells at the top of the flower-stalk; proportion 

 of club-shaped hairs present 9 , and number of hairs 

 9 , on the epidermis of the flower-stalk at the middle ; 

 thickness of the outer walls of the epidermal cells in the 

 transverse section of the flower-stalk $ ; length 9 , width 

 3 , of the upper epidermal cells of the dorsal sepal at the 

 midrib ; number of hairs $ , length of hairs $ , on the 

 upper epidermis of the dorsal sepal at the midrib ; length 

 9 , of the upper epidermal cells at the base of the dorsal 

 sepal ; length of the hairs $ , on the upper epidermis at 

 the base of the dorsal sepal ; length $ , width 9 , of the 

 lower epidermis at the base of the dorsal sepal ; length 9 , 

 of the upper epidermal cells at the middle of the petals ; 

 length 9 , and width $ , of the lower epidermal cells at 

 the middle of the petals ; length of the hairs on the an- 

 terior part of the petals at the base 9 , length of the 

 upper epidermal cells of the labellum at the base 9 ; 

 length 9 = 3, and width $ , of the upper epidermal 

 cells of the labellum at the most anterior part; length 

 9 , and width 9 , of the lower epidermal cells of the 

 labellum between the apex and the most anterior part; 

 color 9 , of the lower epidermis of the labellum between 

 the apex and the most anterior part ; length of the lower 

 epidermal cells at the base of the labellum $ ; color of 

 the lower epidermis at the base of the labellum $ . 



TABLE J 57. Summary of characters of hybrid-stock as regards 

 sameness, intermediatencss, excess, and deficit of development 

 in relation to parent-stocks. 



(6) Lower than in either parent: In the number of 

 stomata on the lower epidermis of the leaf at the apex $ ; 

 number of stomata on the lower epidermis of the leaf at 

 the middle 9 ; depth of the upper cuticle 9 , depth of 



