ofSwartz and Syrrhopodon of Schwaegrichen. 219 



plant, and from the nature of the peristome, a species belong- 

 ing to the same genus, under the name of Calymperes Gard- 

 neri. Here, however, Dr Hooker discovered the presence 

 of actual teeth to the peristome, united at the base into a 

 membrane, whereas in the figures of Calymperes given by 

 Schwaegrichen, there is an horizontal membrane radiated 

 with lines, as it were the rudiments of teeth, very similar to 

 the appearance which the peristome of C. Gardneri presents 

 in a young and moist state. 



Schwaegrichen then, in his last supplement, considering 

 Calymperes to be destitute of actual teeth, and C. Gardneri 

 to be furnished with them, and finding some further charac- 

 ters to exist in the calyptra, constituted of the latter the 

 genus Syrrhopodon, adding to it the Weissia cUlata of Hook- 

 er, and four other species. 



The two genera, as we have already observed, are very 

 closely allied in habit. They grow mostly on the trunks of 

 trees in a tufted manner, somewhat like the genus Orthotri- 

 chum. Their leaves, generally narrow and much elongated, 

 have for the most part a close and compact texture, except at 

 the broad sheathing base, where a considerable portion is oc- 

 cupied by extremely large, very pellucid, and even transpa- 

 rent, colourless, quadrangular cellules. The extremity is 

 often lengthened out, again becoming broader at the very 

 apex, so as to be somewhat spathulate, and there producing 

 minute jointed bodies, which have so much the appearance of 

 a species of conferva, that we cannot help considering them 

 as quite analagous to the Conferva Orlhotrichi, and by no 

 means to the male flowers of mosses, although Schwaegrichen 

 considers them as such, and makes them form a part of his 

 generic characters. Swartz spoke of them doubtfully as the 

 male flowers, and we have ourselves seen the real gemnnform 

 male flowers of Hedwig, in more than one instance. The 

 margins of the leaves are more or less incrassated, serrated, or 

 entire; when serrated, the scrraturcs are often extended to 

 the summit of the back of the nerve, and, in one instance, are 

 in that situation so much and so irregularly scattered, as to 

 give that part a spiculated appearance. The nerve is per- 

 current, (except in the doubtful species Syrrhopodon Tayloru 



