PHASCUM. 67 



Stems almost simple; leaves lanceolato-subulate, falcato- 

 secund, fragile, nerved ; those of the perichaetium convolute, 

 the innermost nerveless. — Eng. Fl.p.l; Mllll. Syn.pt. 1 .p. 9. 



Alpine rocks, with the other species. Fr. Spring. The 

 presence of a nerve and hooked leaves distinguishes this 

 species from the others. Miiller enumerates two varieties of 

 it found in Switzerland. 



4. Andue^a nivalis. Hook. {Tall Slender Split Moss.) 

 Stems slightly branched ; leaves loosely imbricated, lanceo- 

 late, subfalcate, secund, nerved ; those of the perichsetium 

 similar to the rest. — Ung. Fl. pt. I. p. 2; Miill. Si/n. 

 pt. \. p. 9. 



Discovered by Hooker and Borrer on the summit of Ben 

 Nevis, and also on other parts of the Cairngorum range. 

 It is not unlikely that some of my readers may be treading 

 these alpine heights, and should they meet with this species, 

 they will find little difficulty in distinguishing it by its long 

 pale-brown branches. 



PHASCUM, Linn. (Earth Moss.) 



A name of Greek origin, applied at first to a tree Lichen 

 — Us7iea barbata — but adopted by Hedwig for all the class 



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