var. β. l. imbricate, not secund. γ. subsphœricarpon. l. strongly nerved nearly to apex; caps. roundish ovate, tumid.
525. H. dilatatum. Wils. (H. molle, Bry. Eur.) Plant of somewhat firm growth; l. rotundo-ovate, rather concave, suddenly apiculate, texture very close, areolæ long and very narrow; nerve double, short slender, but well defined (fide G. E. Hunt). Caps. ovate cernuous curved, lid conical.
At a low elevation. N. Wales, Yorkshire, Berkshire, Clova, Braemar.
526. H. molle, Dicks. (H. alpestre (?) Bry. Eur., non Swartz.) Very weak and flaccid, the tufts falling to pieces on removal from the water; l. varying from ovate to rotundo-ovate, flat, or sometimes very slightly reflexed towards apex, gradually tapering upwards, or very rarely suddenly apiculate; texture somewhat loose, areolæ larger and wider than in last; nerve rather long and thick, ill-defined, single or double (fide G. E. Hunt). Caps. as above.
Great elevations. Ben-mac-Dhui, Ben Nevis.
[The above two diagnoses are from a paper by Mr. G. E. Hunt, on Perthshire and Braemar Mosses in Trans. Lit. and Phil. Soc. and Manchester, 1868–9, p. 320.]
527. H. arcticum. Sommerfelt. St. 1–2in. creeping; br. elongate, simple, obtuse; l. spreading, green above, purplish below, small, broadly ovate or roundish, somewhat obtuse, entire, strongly two-nerved about half way, sometimes nerves blended into one; caps. ovate, cernuous, tapering into the seta; lid conical.
Alpine rivulets. VI.
528. H. eugyrium. Schpr. St. short, much branched; l. crowded, st. l. drooping on two sides, broadly oblong-lanceolate, shortly acuminate; br. l. flexuoso-falcate, plano-concave, elongate-lanceolate narrower, serrulate at apex; nerve thin, unequally bifid; areolæ vermicular excavate, fulvous, and rectangular at the decurrent angles; per. l., external spreading, internal erect, longly lanceolate, with erose apices; caps. ovate-oblong cernuous, turgid, lid mammillate; annulus broadly bi-triseriate. [Bry. Eur. VI., t. 579. Schp. Syn., 639.]
Stones in waterfalls. Summer.