On Bog Mouses. 1 (>!) 



elongated, with a few imperfect fibres in the lateral cells, these 

 bound a central triangle, the base of which is formed by the apical 

 margin, and this space is occupied by large loose rhombic cells, 

 broader and 2-3 partite at the apex of leaf; both fibres and pores 

 occur sparingly in the auricles. 



Fascicles of 4-5 branches, of which 2-3 are arcuate and 

 divergent, the others pendent, elongated and closely appressed to 

 stem. Eetort cells of the branches larger, recurved at apex. 



Branch leaves numerous, in five rows, not undulated, firm, 

 brownish or ferruginous green, rather glossy, ovate at base 

 becoming lanceolate above, toothed and involute at apex ; hyaline 

 cells elongated, ivith numerous annular and spiral fibres, and 

 many minute pores at margin ; chlorophyll cells narrow, elliptic in 

 section, quite enclosed hut nearest to the bach of leaf ; border widest 

 at base, formed of 3-4 roivs of very narrow cells. 



Male inflorescence consisting of few antheridia which are borne 

 on the pendent branches. 



Capsules numerous, seated in the capitulum, moderately elevated ; 

 perichtetium large, inflated, the bracts yellowish green, lower 

 elongated oblong, upper broadly obovate — oblong, convolute, trun- 

 cate and fimbriate at apex, transversely undulate at base, without 

 fibres or pores. Spores yellow. 



Hab. — Deep bogs in the northern region of Europe. Discovered 

 by Lindberg in 1856 near Lakes Betsetjaur, Skutijaur and Stora- 

 vaviken in Pitean Lapland, and since found to be pretty generally 

 distributed in other parts of Lapland as well as in Finland and 

 the north of Sweden ; Dovrefjeld, Norway (Berggren) ; in the 

 Kiesengebirge, Silesia (Milde) ; Alps of Salzburg (Sauter). In 

 this country it was found in 1867 by McKinlay on Ben Wyvis in 

 Koss-shire, and in America it has been met with in Canada, 

 Newfoundland, and Greenland. Fr. July. 



This fine species closely resembles Sph. intermedium, but is 

 readily known by the diflferent form of the stem leaves, and the 

 non-uudulated branch leaves unaltered by drying, as well as by the 

 glossy reddish brown colour. The species also appears to be 

 subject to hardly any variation, and will doubtless be found in 

 other localities in the north of Scotland. 



EXPLANATION OF PLATE LXXVI. 



Spbagmmi Lindbergii. 

 a. — Fertile plant. 



1 . — Part of stem and branch fascicle. 

 3. — Fruit and pericb^tium. 4.— Bract from same. 

 5. — Stem leaves. 5 a a. — Areolation of apex of same x 60. 5 a b. — Ditto of 



basal wing. 

 G. — Leaves from middle of a divergent branch. 6 p. — Point of same, (ia;,—- 



Transverse section. 6 c.— Cell from middle X 200. 

 7. — Lasal intermediate leaf. 

 9 .C-. — Part of section of stem. 

 10.— Part of a branch denuded of leaves. 



