Dicranum.] MUSCI-ACROCARPJ-PERISTOMI. 35 



and polished appearance. The teeth are broad, often cleft, as in some 

 Dicrana, which the peristome in other respects resembles. 



18. Glyphomitrion. Brid. Glyphoniitrion. 



Seta terminal. Caps, without an apophysis. Peristome 

 single, of 16 teeth approximated in pairs, reflexed when dry. 

 Calyptra furrowed, covering the whole capsule, entire or rarely 

 cleft on one side and laciniated. — Named from y>,v(pa, to sculp- 

 ture, and y.tr^tov, a little mitre, on account of the furrowed 

 calyptra. 



1. G. Daviesii, Brid. (3Ir. Davies Glyphomitrion). Schwaegr. 

 Suppl.v. 3. t. 113. Hook, and Grev. hi Ed. Journ. of Sc. v. 1. 

 p. 131. Muse. Brit. ed. 2. p. 110. t. 13.. — Grimmia Daviesii, 

 Turn. Muse. Hib. p. 24. — Encalypta Daviesii, E. Bat. t. 1281. 

 — Griffithia Daviesii, Br. in Linn. Tr. v. 12. p. 575. 



On rocks, generally near the sea, particularly in Wales and Ireland. 

 Rocks at Kilpatrick on the Clyde, Mr. T. Drummond. Fr. March. — 

 Stems about half an inch in height, tufted, resembling small plants of 

 Trichostomum polyphyUum. Leaves lanceolato-acuminate, carinate, en- 

 tire, of a dark brownish-green colour, much crisped when dry, those of 

 the pericfuetium broad and convolute. Capsule turbinate, beautifully 

 smooth and regular in its form, brown. Lid shortly conical, with a 

 rather long and sharp beak. — This moss is peculiar to the British Isles. 



19. DfcRAXUM. Hedw. Fork-moss. 



Seta terminal (except in D. adiantoides and D. taxifolium). 

 Peristome single, of 16 bifid, equidistant teeth. Calyptra niitri- 

 form. (Muse. Brit. t. 2.) — Named from djxgavov, & flesh-hook or 

 fork, from the resemblance of its forked teeth to that instru- 

 ment The first division of Dicranum, with distichous leaves, 



does indeed form a natural groupe or genus, but possessing 

 no character in the fructification. 



A. Leaves hifarious (Fissidens, Hedw, ) 



1. D. bryoides, Sw. (lesser pinnated-leaved Fork-moss'); >*-i :i 

 terminal, Leaves of the perichartium resembling those of the 



stem. MuSC. Brit, ed, 2. p. ^. I. 16 x. stein short simple, 



capsule erect. /). bryoides, Sir. Muse. Suec, t. 2. f. \. Fl, Brit, 



/<. 1232. E. Bot. t. 625. Lmn. Muse. Hib. /. 53. Drum. 



Mas,-. Scot, r. 2. //. 88. — Fissidens bryoides, Hedw, >V. Cr, v, 3. 



/. 2!) /////)//>//// bryoides, Linn. — Dicr, vtridtdum, Sw, Muse. 



Suec, L 2./, 3. Fl, Brit, />. L280. /:. Bot '• 1868 — Bryum 



liriiluhiin. Linn Dicks, ('>■ Fasc. 1. /. I. f, 5. — Fissidens 



<. ii/is, Hedw, Sp, Muse. t, 88. / 7 — !). — p. item elongated some- 

 what branched, capsule erect. D. osmvndioides, Turn, Muse, 

 Hib. />. .')."). II. Brit, />. 1233. /•;. Bot, f. 1662. — Fissidens 



osmnnd. Iluhr. Sp. Muse. t. 40, /' 7 -11. — F, OSpknU 



Schwaegr, Suppl v, I. /'. II. p, 8. Brid, Meth. Muse p. 190, 

 (andcf the same author, according to Mr, Arnott\ F.degans % 'limn- 



