Supplement.] 245 



gradually tapering into a long sharply-toothed subula nerve, slender, reaching half 

 way ; cells long, narrow, thick-walled, basal rather incrassate. Near var. Holtii. 



Hab. — Bog near Craig-lyn-Dyfi, Merionethshire {Miss M. Roberts 1898). 



Var. t. squalidum Ren. &• Dixon I.e. 276. 



In dense intricate masses, pale dull green above, dirty reddish-brown below. 

 Stems rather robust, but little branched ; leaves somewhat complanate, falcate in 

 upper part of branches, rather large, lanceolate, ending rather abruptly in a fine, 

 faintly-toothed piliform subula. 



Hab. — Stagnant water, Dawley, Shropshire {Rev. W. H. Painter 1896). 



Var. K. atlantioum Renauld I.e. 277. 



Near var. Jeanbemati, as is also the last. Differs by the green colour and 

 chlorophyllose tissue. Leaves larger, oval, suddenly contracted into a short acumen, 

 nerve a little broader, basal tissue laxer, median cells wider and shorter. 



Hab.— N. Derbyshire (Prof. Barker). Summit of Pendle hill, Lanes. {Wheldon 1898). R. Wyre, 

 W. Lanes. {Wilson 1900). Arncliff wood, N. Yorks {Ingham 1900). 



Isothecium (^ar^ myosuroides^brackythecioides Dixon Journ. Bot. 1902, p. 379. 



Robust, 3 — 5 in. long, growing in large masses, primary stem hardly stoloniform, 



secondary procumbent not dendroid, with straight irregular branches. Stem leaves 



large, with long points, branch leaves nearly similar, with long fine points. 



Hab. — Quiraing hill, Skye {Dixon 1893). Ben Clibrick, Sutherland {Di.von 1899). Lough Swilly, 

 Ireland {Hunter 1902). Connor hill, Kerry. 



PLAGIOTHECIUM PILIFERUM (Sw.) B.S. 

 Autoicous ; in soft, flat, glossy tufts. Stem stoloniferous, leaves 

 bifarious, broadly ovate, decurrent, elongated into a flexuose hair. Capsule 

 suberect, longish cylindric, with a long neck ; lid convex, obtuse, yellow. 

 (T. CXXVIII, E.) 



Syn. — Leskea pilifera Swartz Summa Veg. Scand. 41 (1814). Hartm. Skand. fl. 419 (1820). 



Hypnum denttculatum y piliferum Wahlenb. FI. suec. ii, 710 (1826). 



Hypnum orthocarpum Aongst. Disp. muse. Scand. p. 2 (1832). 



Neckera pilifera Spruce Muse. Pyr. exs. no. 66 (1847). 



Hypnum trichophorum Spruce Muse. Pyr. exs. no. 25 et in Ann. Mag. nat. hist. 2 ser. iii, 

 276(1848). C. MuELL. Synops. ii, 252 (1851). Boulay Muse. Fr. 86 (1884). 



Plagiothecium piliferum Br. Sch. Bry. Eur. fasc. 48, p. 8, t. 3 (185 1). Schimp. Synops, 577 

 (i860), 2 ed. 692. HusN. Muse. Gall. 349, t. 100 (1893). Limpr. in Rabenh. D. kr. fl, 

 Laubm. iii, 251, fig. 392 (1897). D. A. Jones in Journ. Bot. 1904, p. 156. 



Plagiothecium trichophorum Vent. & Bott. Enum. crit. 18 (1884). 



Autoicous ; in flat, soft, yellowish-green shining patches. Stem slender, 

 much branched, stoloniferous and prostrate. Leaves complanate, decurrent, 

 ovate, suddenly elongated into a bent hair, concave, irregularly sulcate, 

 margin narrowly recurved, entire, nerve very short and faint ; cells narrow, 

 linear, lo times long as wide, quadrate and rectangular at base. Perich. 

 bracts erect, thin and nerveless, suddenly elongated at the rounded point 



