which portions from interridge areas occur over fiber strands and 

 the largest veins; which are the abaxial and adaxial sides of the 

 strip; which are its distal and basal ends, and its left and right 

 sides relative to the lamina it came from. A cyclanthaceous 

 stoma is normally encircled by four subsidiary cells, and the 

 stoma and associated subsidiary cells are collectively called a 

 stomatal complex (Tables 4-6). Subsidiary cells may differ from 

 ordinary epidermal cells in numerous ways such as their shape 

 and position, nature of inclusions, staining of outer cell walls, size 

 of nuclei, and thickness and ornamentation of the cuticle. In four 

 species the stomata exhibit polar perforations, i.e., large pores 

 located within the distal and basal ends of the common wall 

 between tw< ^sociated guard cells. Cyclanthaceous stomata 

 exhibit substantial dorsiventral symmetry. 



TABLE 1. 



GENERAL RANGE IN COMBINED THICKNESS OF CUTICLE AND CUTINIZED 



REGION (rounded off to nearest quarter micrometer) 



Species Adaxial epidermis A baxial epidermis 



A. aff. A. antioquiae 0.75- 1.5 5-2 

 (coll. A) 



A. aff. A. antioquiae 1-1.5 05-1 

 (coll. B) 



A. cabrerae 2 - 3.25 0.75- 2.5 



A. cayapensis 1.5 - 2.5 0.5 - 2 



A. sp. nov. aff. A. 



cupulifera (co\\. A) 1-1.5 0.5-1 



A. sp. nov. aff. A. 



cupulifera (coll. B) 3 - 4.75 1 _ 375 



A. gamotepala 3.25- 7.25 1. 5 - 6.25 



A. hookeri 0.75- 1.5 <0.5 - 0.75 



A. longitepala 1.5 - 2.5 0.75- 1.5 



A. sp. nov. aff. A. 



longitepa/a 2.5 - 5.25 1.5 - 4.25 



A. moritziana 2 - 3.75 0.75- 3 



A. aff. A. moritz'' 3 - 4.25 1 - 2.5 



104 



