-6 4 - 



half only; upper leaf cells regularly six- angled, much smaller; 

 capsule less curved, single. 



Mr. Dixon says that these two species are separated by a 

 combination of characters, most of which may, at one time or an- 

 other, be found to some extent in both species. But he adds that 

 they can usually be readily distinguished by the lamellae, which, 



in the wavy Catharinea, are few, short and, when flattened out 

 beneath a cover glass, occupy (in the upper part of the leaf) £- T V 

 the entire width of the leaf, while in the narrow-leaved Catharinea 

 they will cover the width of the leaf. 



Explanation of Plate. 



Figs. 1-3— Catharinea angustata; r, plant, natural size; 2, leaf, greatly en- 

 larged; 3, capsule, operculum, and calyptra, enlarged. Figs. 4-7— Georgia 

 pellucida; 4 , plant, natural size, showing the basal branching; 5, Gem- 

 miferous plant; 6, capsule, enlarged; 7, Gemmae. Figs. 8- 11— Webera 

 sessilis; 8, plant, natural size; 9, capsule, greatly enlarged; 10, half of 

 mouth of cupsule, enlarged, showing plicate cone; 11, Perichaetiaal leaf. 

 [Taken by permission from Mrs. Britton's plates in the Observer.] 



