86 



Distinctive Chabactees of Groups op Hypnitm. 



A. Tamabasctna. Stems pinnately or bipinnately branched, 



covered with matted green fibrillous rootlets. Leaves 

 imbricated all round the stems and branches, not two 

 farious or distichous, nerve stout. 



B. Adunca. Leaves falcate, secund ; nerve single, continuous 



or vanishing below the apex. Fruitstalk smooth. Lid 

 short, conical. Often aquatic or marsh mosses. 



C— Hispida. Stems rigid, stiff, sparingly branched. .Leaves 

 falcate and secund, nerve very stout. 



D. Ciipbessifoemia. Stems flattened. Leaves more or less 



secund, falcate or circinnate, imbricate all round the stem 

 or obscurely 2-farious ; cells at the outer base often large. 

 Nerve 0. Fruitstalk smooth (rather rough in H. cervicu- 

 latum. 



E. Pe^elonga. Leaves spreading, imbricate all round the 



stem, not squarrose nor secund, serrulate, nerved half- 

 way. Fruitstalk scabrid, lid beaked. 



F. CoHTERTA. Leaves imbricating all round the stem, not 



squarrose nor secund, usually small and serrulate. 

 Fruitstalk smooth, lid beaked. 



G. Eutabula. Leaves spreading, imbricate all round the 



stem, not squarrose, rarely sub-second. Fruitstalk rough ; 

 lid short, conical. 



H. Stellata. Leaves imbricated all round the stem, small, 

 spreading, and squarrose. Fruitstalk smooth, capsule 

 not grooved. 



I. Acicularia. Stems stout, sub-erect, sparingly branched. 

 Leaves imbricated all round, squarrose, large, very 

 concave, flaccid, serrate, nerveless. Capsule grooved or 

 angled. Calyptra large, inflated. 



J. Cochleaeipolia. Stems stout or slender, prostrate, some- 

 times pendulous. Leaves imbricated all round, often 

 appressed, not squarrose or secund, very concave and 

 inflated, transparent, obtuse or apiculate; nerve or 

 obscure. Fruitstalk smooth. Capsule not grooved. 



K. Distichophylla. Stems and branches compressed. 

 Leaves inserted all round the stem, but distichous, 

 nerveless or obscurely nerved. 



