200 GLOSSARY OF TERMS USED 



Calyptra. In mosses, the upper portion of the fruit-bearing 

 organ which has been torn off by the upward growth of the 

 capsule (p. 43). In liverworts, the swollen base of the 

 fruit-bearing organ, inside which the capsule is formed 

 (p. 128). 



Capsule, the spore-vessel or fruit. 



Cernuous, drooping ; of the capsule, where it is slightly inclined 

 from the line of growth of the fruit-stalk. 



Chlorophyll, the minute green grains of colouring matter con- 

 tained in the leaf-cells. 



Cilia, extremely delicate hair-like growths (by means of which 

 the antherozoids move about in water) (pp. 40, 127). 



Colesule, the leafy cup or envelope borne by most of the leafy 

 liverworts, inside which the fruit-bearing, and sometimes 

 the fertilising organs also, are produced (p. 124). 



Columella, the small rod or column which occupies the cenw of 

 the capsule of mosses, and round which the spores are 

 formed. 



Cribrose, of the peristome ; where the teeth are pierced with 

 minute holes (Plate V.a, fig. 9). 



Cryptogams, " flowerless " plants, i.e. not possessing stamens, 

 pistils, and true seeds. 



Cup, see Colesule. 



Decurrent, when the base of the blade or lamina of the leaf is 



continued down the stem. 

 Dioicous, when the fertilising organs and the fruit-bearing 



organs are produced on distinct and separate plants. 



Slaters, extremely delicate spiral or chain-like bodies found 

 mingled with the spores of most liverworts, and believed 

 to be connected with the dispersal of the spores (p. 135). 



Excurrent, of the nerve of the leaf when extended beyond the 

 lamina. 



Ezserted, where the capsule is lifted up by the fruit-stalk above 

 the surrounding leaves. 



