INTRODUCTION TO CRYPTOGAMIC BOTANY. 497 



species are but few, and belong partly to the northern hemi- 

 sphere, partly to South America, below the line. Mielichoferia 

 has representatives also at the Cape, in Abyssinia, and in 

 Kumaon. Schizhymenium, Harv., a Cape genus, has a 

 double peristome, the inner of which is beautifully cancellated, 

 and the outer very deciduous. 



V. Pleuhocarpi, Bridel. 



Sporangia lateral, growing from purely perichsetial branches. 



55^!. If there was some room for doubt about the signifi- 

 cance of the fruit-bearing branches in the Gladocarpi, there 

 is none here. They are reduced to so small a size that they 

 bear little or no resemblance to the main branches from which 

 they are developed, and the leaves with which they are beset 

 are purely perich^tial. In one or two cases, as in Fissidens 

 and Anoectangiumi, the connection with Acrocarpous mosses 

 is so complete, that there is little to separate them, save the 

 mode of growth ; but in the generality of cases there is scarcely 

 any immediate connection with the earher tribes. 



Ancedangiei. — Sporangium ovate or spherical, gymnostomous. 



Drepanophyllei. — Leaves equitant. Peristome single. 



Fahroniei. — Leaves imbricated. Teeth 16, arranged in pairs. 



Fontinalei. — Aquatic. Sporangium subsessile. Peristome 

 double. 



Cryptothcciei. — Leaves imbricated. Calyptra mitriform. Pe- 

 ristome double. Habit diffuse. 



Hookeriei. — Stems flattened. Leaves imbricated. Calyptra 

 mitriform. 



Neckerei. — Stems mostly compressed and pinnate. Peduncle 

 usually short or wanting. Calyptra dimidiate. 



Hypnei. — Leaves mostly imbricated. Peduncle long. Peri- 

 stome double. Calyptra dimidiate. 



Leiicodontiei. — Leaves imbricated. Sporangia erect. Calyp- 

 tra dimidiate. 



Rhizogoniei. — Sterile stems froudose ; fertile perichfetial. Ca- 

 lyptra dimidiate. 



Pliyllogoniei. — Leaves distichous, folded. Peristome single. 

 Calyptra dimidiate. 



Hypopterygiei. — Leaves trifarious, the third row smaller than 

 the others (amphigastra). 



Ilacopliacei. — Leaves dimorphous. Calyptra j)ilose below. 

 32 



