Hypnace^.] 86 {Hypnurn. 



Eurhynchium crassinervium Schimp. Bry. eur. fasc. 57 — 61, p. 14, t. 11 (1854), Synops. 

 55=; (iSCo), 2 ed. 669. MiLDE Bry. siles. 303 (i86g). Hobk. Synops. 2 ed. 204 (1884). 

 H VSN. Muse. gall. 337, t. 97 (1893). Dix. James. Stud. Handb. 414 (i8g6). Limpr. in 

 Rabenh. D. kr. fl. Laubm. iii, 176 (1897). 



Rhynchostegium crassinervium De Not. Cronaca II, 12 (1867), Epil. 83 (1869). 



Dioicous ; in soft glossy pale green or golden brown tufts. Stems 

 elongated, creeping, stoloniform, with crowded, erect, dense-leaved 

 branches, turgid when moist ; paraphyllia none. Stem-leaves divergent 

 when moist, appressed when dry, broadly ovato-lanceolate, acuminate, 

 deeply concave, the margin plane, recurved towards base, minutely 

 serrate; nerve stout at base, yellowish, vanishing at J the length ; cells 

 short, incrassate, with several transverse rows longish-oval at base 

 and many longish quadrate at angles. Branch-leaves less suddenly 

 pointed. Perichsetium short, laxly imbricated, inner bracts ending in a 

 long filiform toothed subula, with a very faint nerve ; seta purple, stout, 

 densely verrucose ; capsule cernuous, longish oval, with a distinct neck, 

 pale brown, strongly contracted below the mouth when old ; lid rather 

 short, conic, rostrate, teeth of peristome brownish-yellow, papillose 

 above middle. 

 Hab. — Shady limestone rocks, not uncommon. Fr. 11. 



Near Cork (Taylor 1820) ! Mucruss and Kenmare (Wilson). Beaumaris and Bangor 

 (\Vilson)\\ UaAock (Wilson). Lewes, Sussex {WiV/»o/io») ! ! Frequent in Yorkshire. 



Var. p. tenue Braitkw. 



Plants slender pale green, i — i in. high; stems with few branches, 

 leaves more erect, narrower and more acuminate. 



Syn.— Eurhynchium Vaucheri (non Schimp.) G. Davies in Moss Flora of Sussex, p. 15 

 (Brighton Nat. Hist. Soc. 1870). 



Hab. — Tillington and Clayton, Sussex {Davies) ! ! 



Hypnum Tommasinii Sendt. (Vaucheri Schimp. non Lesqu.) has not been 

 found here. It has leaves gradually tapering into a long slender subula, a 

 thin nerve reaching middle, and longer cells. 



Sect. 4. RHYNCHOSTEGIELLA Schimp. Small mosses growing on 

 rocks and stones in streams or damp walls, in flat entangled tufts. Leaves 

 divergent in all directions, lanceolate acuminate, flat at margin, cells narrow 

 and linear, the basal narrow and rectangular. Perichaetium not squarrose, 

 seta scabrous or rarely smooth. 



Clavis to the Species. 



Seta smooth, nerve nearly reaching apex Algirianmn. 



verrucose. 



Nerve reaching apex, plants dull green, leaf-point bluntish. TcesdaUi. 



narrow, reaching half-way, plants green and glossy. 



Leaves pointed, cells laxer, fusiform. curviscium. 

 long and fine pointed, cells narrow. litoreum. 



