368 ON TWO KEMAUKABLU 



quite analogous to Anthoceros. The form is gene 

 rally speaking orbicular, very variously lobed around, 

 like a Collema, with the plicated lobes all tending 

 towards a common centre. The margin of these 

 lobes is, in most instances, turned up and crenate. 

 From the plicae or folds, arise the Calyces in every 

 direction; sometimes a few only on a single frons 

 scattered about; sometimes a great number of them 

 singly, or in clusters. The under side of the frons is 

 thickly clothed with very fine radicles, by which it 

 inseparably adheres to the earth. The lobed cir- 

 cumference, however, is free, but flatly impressed. 

 A single perfect frons is rarely an inch in diameter, 

 generally scarcely half an inch ; but a great number 

 are often confluent, so that patches of six or seven 

 inches jointly cover a considerable space. In no in- 

 stance did I meet with superincumbent frondes ; but, 

 as is usual with this family, blades of grass or fron- 

 dose mosses not unfrequently grow through the mass. 



The Calyx is a short cylindrical protrusion of the 

 frons, divided into two lobes or divisions, commonly 

 somewhat irregularly lacerated in the margin, and 

 closely pressing around the capsule, farther convex- 

 ly bent down at top, so as finally to propel the cap- 

 sule, which appears loose in the calyx. After this 

 falls out, a hollow calyx remains. In a young state, 

 the two divisions of the calyx almost entirely cover 

 the capsule, which, however, always appears at the 

 top, and at length bursts forth in the manner just 

 mentioned. 



The Capsule is a very regularly oblong sphaeroid, 



