230 EECENT ADDITIONS TO OUR MOSS FLORA. 



longly subulate, strongly serrulate above on the dorsum and margin ; 

 nerve thin, very broad, occupying all npper part of leaf; cells at base 

 small, parallel, narrow, the alar cells lax, brownish. Perichsetial leaves 

 very long, with a broadly sheathing convolute base. Capsule on a slender 

 pedicel, elongato-cylindraceous, erect, not striate, fuscous. Lid longly 

 subulate, oblique,palc. — Granite rocks in the subalpine region. Maiden- 

 bower Crag, Dumfries, with Grimmia patem (Herb. Kew). Ben Lawei's 

 (Dr. Stirton). Clova (Fergusson). Mael Girdy (Tlev. J. M. Crombie). 



4. D. circinatum, Wilson, Bry. Brit. p. 76. B. Dlckieanum, Wilson, 

 ras. D. asperuluni, Mitten. Blcranodontium aristatum, Schimper, 

 Muse. Eur. Novi, fasc. 1. — Dioicous, in loose, irregular, deep green tufts. 

 Stem repeatedly dichotomous, geniculate or ascending, 3 to 6 inches long, 

 with radicles proceeding from the base of the leaves. Leaves very long, 

 secund, arcuate, from an oblong, sheatliing base, decurrent at angles, 

 longly snbulate, concave ; nerve flattened, occupying \ of base, and all 

 the subula, which is denticulate ; base laxly areolate in the middle, with 

 narrower cells at margin. Fruit unknown. — Ben Voirlich (Dr. Gre- 

 ville). Ben Nevis (M'Kinlay). Clova (Rev. J. Fergusson). Lennox 

 Castle, Carapsie (M'Kinlay). Loch Maree, etc. (Mr. Hunt). I have 

 tried in vain to separate these, so far as British specimens are concerned ; 

 the Campsie specimens named D. asperulum, have caducous leaves, but 

 this may be due to a drier liabitat. B. aristatum has the upper half of 

 basal margin incurved and sharply serrated, but I have not seen any 

 agreeing in the back of the subuln, with Schimper's figure, in which it 

 is represented covered over with prominent points. It is possible 

 we have not the true species, as Molendo states that his specimens are 

 different. Mr. Mitten refers B. circinatum to D. (ThysanomitriumJ 

 uncinatam, of Harvey, in Hooker's Ic. PI. Ear., which if correct, will 

 remove it to tlie genus Campylopns. 



B. albicans, Bruch and Schimper, Bry. Eur. B. enerve, Theden in 

 Hartm. Skand. Flora. — Recorded by Mr. Mitten as a native, on au- 

 thority of specimens from the late A. 0. Black, which, though reputedly 

 from Clova, are now believed to have been Swiss. 



B. elongatum, Schwgr. — Mr. Hardy has published this in his ' List 

 of Mosses of the Eastern Borders,' on authority of specimens col- 

 lected at Hedgehope, one of the Cheviots. Having been kindly favoured 

 with some of these, I feel bound to refer them to B. fuscescens, of 

 which they are a form, with more entire leaves than usual. 

 {To he continued.) 



