140 HANDBOOK OF BRITISH MOSSES. 



incurved; leaves imbricated, ovato-oblong or oblong, shortly 

 acuminate, minutely toothed at the apex only, with a faint 

 single or forked nerve reaching halfway up ; cells narrow, ver- 

 miform, those at the angles shorter, subquadrate ; perichsetial 

 leaves erect; fruitstalk about J an inch long; sporangium 

 ovate, tapering below, erect, regular, rarely slightly inclined 

 or bent ; lid rostrate ; outer teeth pale, adhering mostly to 

 the inner peristome, sometimes more or less abortive ; inter- 

 mediate cilia often deficient. 



/. myosuroides is with Schimper placed in Hypnum. Its 

 recurved perichsetial leaves distinguish it, as well as their 

 form, if it is considered as an Isothecium. 



14. CLIMACIUM, Web. % Mohr. 



Sporangium subcylindrical, erect, symmetrical; peristome 

 double ; inner of 16 scalariform processes, longer than the outer 

 teeth ; columella exserted ; primary stem or rhizoma creeping, 

 secondary bare below, dendroid ; cells of leaves narrow. 



1 . C. dendroides, Web. Mohr ; leaves ovate or ovato- 

 lanceolate, erecto-patent, bisulcate, serrate above ; perichsetial 

 leaves nerveless ; sporangium oval-oblong ; lid rostrate. 

 Hook. % Wils. t. xxv. ; Eng. Bot. t. 1565. ; (Plate 13, fig. 2) ; 

 Moug. Nest. n. 138. 



In meadows, bogs, and marshes. Bearing fruit, though 

 rarely, in autumn. 



Dioicous. Rhizoma creeping, throwing up erect stems, 

 which are void of branches below and divided above in a 

 dendroid manner ; leaves ovate or ovato-lanceolate, pointed, 

 toothed in the upper half, with a single furrow on either side, 

 nerve reaching nearly to the tip; cells narrow, except at the 

 base and angles ; fruitstalks about an inch long, aggregate ; 

 sporangium erect ; colurnella exserted when dry, and raising 



