HvPNACEyE.] 1 72 \Isopterygium. 



Hypnum curvifoUutn (non Hedw.) C. Muell. Synops. ii, 292 p.p. (1851), Deutsch. Moose 

 423 («8S3). 



Hypnum cupressiforme var. complanatutn Hampe Veg. eel. Hercyn. exs. no. 96. 

 Isopterygium pratense Lindb. Muse. Scand. 39 (1879). 



Dioicous and pseudautoicous ; in lax soft pale green tufts. Stem 

 rigid, prostrate or ascending, with few irregular complanate branches; 

 paraphyllia few and small. Leaves crowded, secund and decurved at 

 points, ovato-lanceolate, thin, entire or serrate at the long narrow point, 

 slightly undulate when dry ; nerves obsolete or very short ; cells very 

 narrow, pointed, at angles few, quadrate and rectangular; branch-leaves 

 smaller falcato-secund. Perich. bracts imbricated, lanceolate with long 

 recurved points, plicate ; seta red ; capsule cernuous, ochraceous, ovate, 

 gibbous, arcuate when dry ; lid convex-conic, annulus broad, in 3 series 

 of cells ; peristome yellow, processes cleft, cilia 2 — 3, papillose. Male 

 infl. gemmiform, the bracts narrow lanceolate; sometimes attached by 

 radicles to the stem or leaves of the female. 

 Hab. — Wet grassy places, not common, and sterile. 



Sussex (^Borrer). Hurstpierpoint {Mitten) ! ! 



Much resembling Ster. Lindbergii, but the leaves have a different arrangement, 

 and are more or less complanate, with the points curved down on one side ; the 

 cells at basal angles are much smaller. 



2. ISOPTERYGIXTM MUELLEEI {Schimp.) Lindb. 



Dioicous ; in flat shining yellowish-green patches, the stems stoloni- 

 form and flagelliferous. Leaves distichous, lanceolate, gradually narrowed 

 into a subulate point ; nerves none or very short ; cells very long and 

 narrow. Capsule suberect, narrowly obovate tapering into a neck ; lid 

 conic rostellate. (T. CXVI, A.) 



Stn. — Plagiothecium Muellerianum Schihp. Synops. 584 (i860), 2 ed. 698. Milde Bry. Siles. 317 

 (1869). De Not. Epilogo 190 (1869). L£sg. James Moss N. Amer. 367 (1884). Suluv. 

 Icones muse. SuppL 89, t. 66 (1874). Husn. Muse. gall. 349, t 100 (1893). Dixon in 

 Journ. Bot. 1898, p. 241, t 387. Limpr. in Rabenh. D. kr. fl. Laubm. iii, 283 (1897). 



Pbigiothecium rostellatum Molendo in Sched. 186 1. 



Isopterygium Borreri Lindb, Notiz. Saellsk. Fn. & Fl. fenn. xiii, 416 (1874). 



Plagiothecium Molendoi Lorentz in Sched, 



Isopterygium Muellerianum Lindb. in Meddel, Soc. Fn. & Fl. fenn. 1887, p. 77. 



Dioicous ; in flat bright green shining tufts. Stem stoloniform, with 

 ascending subpinnate complanate branches which often become flagelli- 

 form, long very slender small-leaved stolons, and with reddish radicles, 

 the cortical cells very large, lax, and leptodermous. Leaves patent, dis- 

 tichous, from a narrow non-decurrent base elongato-lanceolate, gradually 



