-64- 



upper 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 com- 

 bination of characters, most of which may, atone time or another, 

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

 can usually be readily distinguished by the lamellie, which, in 



the wavy Catharinea, are few, short and, when flattened out be- 

 neath a cover glass, occupy (in the upper part of the leaf) I — ^ 

 the entire width of the leaf, while in the narrowed-leaved Cath- 

 arinea they cover ^ — { the width of the leaf. 



Explanation of Plate. 



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

 larged; 3, capsule, operculum, and cal yptra, enlarged. Figs. 4-7~Georgia 

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

 miferous plant; 6, capsule, enlarged; 7, Gemmae. Figs S-ii — Webera 

 sessilis; 8, plant, natural size; 0, capsule, greatly enlarged; 10, half of 

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

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



