228 SYNOPSIS OP BRITISH MOSSES. 



broadly ovate or roundish, somewhat obtuse, entire, 

 plano-concave and snbcochleariform, strongly 2-nerved 

 about half way, sometimes nerves blended into one, 

 cells narrowish, scarcely dilated at base. Caps, ovate, 

 cernuous, tapering into the seta, lid mamillate. 



Alpine rivulets. June. 



558. H. engyrium, Schp. St. short, much branched. 

 L. crowded; st. 1. drooping on two sides, broadly 

 oblong-lanceolate, shortly acuminate; br. 1. flexuoso- 

 falcate, plano-concave, elongate-lanceolate, narrower, 

 serrulate at apex, nerve thin, unequally bifid, areolae 

 vermicular ; excavate, large, fulvous and rectangular at 

 the decurrent angles; per. 1. external spreading, in- 

 ternal erect, longly lanceolate, with erose apiqes. Caps, 

 ovate-oblong, cernuous, turgid, lid mammillate. Annu- 

 lus broadly bi-triseriate. 



Stones in waterfalls. Summer. 



North Wales, Devonshire, Ellarney. 



Yar. /S. MacK4YI, Schp. Denser and more robust. 

 L. subsecund or erecto-patent, broadly oblong, less 

 acuminate; per. 1. shorter, int. patent, less sulcate. 

 Annulus narrower. 



Killarney, Kendal, Fife, Bangor, Dent (Yorkshire), 

 Devonshire (auct. Schp.). 



b. Dioicous. 



559. H. ochraceum, Turn. St. 2 — 4 inches, tufted, 

 filiform, suberect, sparingly branched, ochraceous below, 

 eradiculose. L. yellowish-green, subsecund, sometimes 

 falcate, distant, ovate-lanceolate, pointed, concave, 

 sulcate, nerve forked, extending half way, entire or 

 faintly serrate at apex, cells narrowly flexuose, at 

 angles lax, rectangular, hyaline; per. L squarrose. 



