66 HISTORY OF BRITISH MOSSES. 



at the extremity by means of a persistent lid. Calyptra irregu- 

 larly torn. Eeceptacle resembling a fruitstalk — in this respect 

 like the Ilepaticce. 



1. Andrejsa ALPiNA, Iledw. [Alpine Split Moss.) Stems 

 brauclied ; leaves obovate, suddenly acuminated, nerveless, 



Z- straight, imbricating the stem on all sides. — Eug. Fl. p. 1 ; 

 Iliill. Syn.pt. \. p. 7. 



On rocks, in alpine and subalpine districts of the three 

 kingdoms, but not very common. It has been found on 

 Ben Nevis in great perfection. Fr. Spring. 



2. AndrEjEA EUPESTRis, Hedw. [Bock Split Moss.) Stems 

 branched; leaves ovate, gradually acuminated, nerveless, 

 the upper ones falcate. — Eng. FL v. b.pt. \.p. \; Mull. 

 Syn.pt. l.p. 6. 



Very generally distributed on rocks throughout the sub- 

 alpine districts of Britain. Tr. Spring. Apt to be mis- 

 taken for the next species, A. Rothii, but readily detected 

 by its nerveless leaf and browner colour. It is smaller than 

 A. alpina, and is found in perfection much lower down. 

 Its abundance gives quite a character to our mountain 

 scenery, and though of sombre hue, the beauty of its struc- 

 ture well repays examination. 



3. Andre^a Eothii, Mohr. [Black Falcate Split Moss.) 



