Hypnace^.] 134 [Heterocladium. 



Dioicous; in small dense cushions, fragile, pale glaucous-green; 

 stem erect, irregularly branched, the branches simple julaceous, obtuse. 

 Leaves closely imbricated, roundish ovate, obtuse, concave, finely toothed 

 by projecting cell ends, sometimes with a short apiculus ; nerve none or 

 very short. Cells hexagono-rhomboid, nearly smooth. Perich. bracts 

 erect, lanceolate, acute, seta purple. Capsule erect, longish oval, pale 

 brown, lid conical, obtuse, teeth lanceolate-subulate, pale yellow, cilia 

 two, short. 



Hab. — On rocks on the higher mountains, not common. 



Ben Lawers and Craig Chailleach ! ! Ingleborough (Nowell 1863) ! ! Teesdale {Borrer 

 1810). Canlochan (Stirton 1865)! Sedgwick, Westmoreland (Stabler 1869). Ben 

 Tigh, Argyll c. fr. (Paterson 1875). 



\'^ar. p. scabrifolia Lindh. Muse. Scand. 37. 



Plants very slender and resembling M. tenerrima. Leaves with a smal 

 apicuhis, toothed at base, rough at back with longer papillae from the cell-angles. 



Hab. — Ben Lawers, creeping among other mosses ( Monlngton, Murray, and Nicholson i8gg) ! 

 Craig Chailleach {Cocks 1900) ! ! Dixon in Journ. of Bot. igoo, p. 333. 



The variety has extremely slender stems, and is intermediate between this 

 species and the last ; it has also a close affinity to M. Careyana Sulliv, 



13. HETEROCLADIUM Br. Sch. 



Bry. Eur. fasc. 49 — 51 (1852). 



Slender mosses growing in dull green rigid tufts. Stem creeping, 

 irregularly pinnate. Leaves dimorphous, the cauline erecto-patent or 

 squarrose, ovato-acuminate, nerves none or obsolete, those of branches 

 small, ovate, acute ; cells of middle longish, the lateral quadrate, 

 projecting as papillae. Capsule cernuous, ovate ; calyptra cucuUate, lid 

 convex-conic ; teeth lanceolate-subulate, cilia 2 — 3 or none. — Der. Irepos 

 different, xXaSos a branch. 



Clavis to the species. 



Stem leaves squarrose, suddenly long-pointed. squarrosulum. 

 divergent, secund, short-pointed. heteropterum. 



I. HETEKOCLADIXTM SftTJARROSTILUM {Voit) Lindb. 



Dioicous ; stems procumbent, vaguely pinnate, the leaves ovate 

 acuminate, squarrosely recurved, those of branches roundish ovate, sub- 

 erect, all minutely serrulate. Capsule oblong, cernuous, lid conical. 

 (T. CIX, C.) 



