266 0)1 Bog Mosses. 



of base, hut rapidly narrows and disappears hcdf-way up the 

 margin. 



Lower ramuline leaves hroadly ovaio-lanceolate, upper elon- 

 gate lanceolate, acide, uith a narrow border; hyaline cells with 

 annular and spiral fibres, and a row of large pores on each side ; 

 chlorophyll cells compressed, enclosed by the hyaline, but nearest to 

 the upper surface of leaf. 



3Iale amentula elongated, fusiform, yellouish-green, the bracts 

 ovate, acute. Capsules at first immersed in the large imbricated ' 

 perichaetium, afterwards becomhig moderately exserted ; tracts 

 below obovate-oblong, above very broad, convolute, cucullate when 

 young, obtuse or emarginate or with a small central apiculus, 

 rather laxly areolate, without fibres or pores. Spores ferruginous. 



Hab. — Bogs and marshy hollows, not uncommon ; frequent in 

 Lancashii-e and Yorkshire. Fr. June and July. Brought from 

 the Antarctic regions by Dr. Hooker, and found throughout Europe 

 and N. America. 



This slender and elegant species is readily distinguished from 

 Sph. acutifoliuni by its pale green colour, and large rounded fringed 

 stem-leaves ; it is more closely allied to Spdi. stridum, but that 

 species is dioicous, and much more robust, and by comparison of 

 the stem leaves of the two plants, we at once see that they differ in 

 form, and that in the latter the fringed portion is restricted to the 

 straight truncate apex, while in Sph. fimhrialtim it extends part of 

 the way down the lateral margin. The specimens given under 

 No. 718 in Eabenhorst's Bryotheca as SjjJi. jimbriatum, belong to 

 /SpA. strictum. 



13. Sphagnum strictum Lindberg, MSS. 

 Of vers. Vet. Ak. ForLaixll. XIX, p. 138 (18G2). 

 Plate LXVI. 

 ^yn.—Sph. Ginjcnsohnu L'ussow Turf. p. 40 (18C5). IMildc Bry. Siles. p. 387 



(i8(;y). 



Dioicous, very like Sph. Jimbriatum, but more robust, yellowish- 

 green or p)ale broumish, in loose tufts. Stem straight pale, 6-10 

 inches high, with 3-4 layers of porosc cortical cells. Cavline leaves 

 erect, appressed to stem, lignlate-spathulate, truncate and laciniate- 

 fimbriate at apex, but not below the rounded ajncal angles ; hyaline 

 cells of upper part rhombic, of middle base rhomboidal, free from 

 fibres and pores, lateral at base very narroiv, and with the cldoro- 

 pjhyll cells forming a very broad border extending up to apex. 

 Eamuli 3-4, of which 2-3 are spreading, flagelliform, the others 

 deflexed, filifoim, appressed to stem, retort cells elongated, perfo- 

 rated, scarcely recurved. Ramuline leaves erecto-patent, ovaio- 

 lanceolate and lanceolate, sometimes recui-ved at apex ; hyaline cells 



