serrulate, nerved nearly to apex; caps. cylindrical, curved, cernuous, lid conical.
Sub-alpine walls and rocks. V. VI.
Sect. III. St. regularly pinnate, radiculose, tomentose;
l. thickly nerved, opaque; caps. sub-*arcuate.
507. H. commutatum. Dill. St. 4in. or more, procumbent;
br. about ½in.—both more or less uncinate; radicles
brownish; l. circinnate, secund, tapering to a slender long
point from an ovate base, plicate, twisted when dry, finely
serrulate, nerved more than half way, areolæ narrow; caps.
large oblong, lid conical: dioicous.
Wet shady places. IV.
508. H. sulcatum. Schpr. Loosely cæspitose; st. rigid, without radicles, sub-pinnate; l. partly broadly elongate-lanceolate, partly sharply lanceolate from broadly ovate base, all reflexed hamulose; nerve strong. [Schp. Syn. 699.]
Mountainous places. Ben Lawers, July, 1865 (G. E. Hunt.)
509. H. falcatum. Brid. (H. commutatum var. condensatum, Bry. Brit.) St. 2-3in. cæspitose, erect, sparingly branched; l. as in commutatum, but less circinnate and more rigid, undulate, nerved nearly to apex; capsule small, curved cernuous. [Bry. Eur. vi., 607. Schp. Syn., 613.]
Sub-alpine places and bogs. V. VI.
510. H. filicinum. Dill. St. 2-4in. sub-erect, slender, pinnate, with purplish radicles; l. spreading, falcato-secund, st. l. deltoid-ovate, tapering; br. l. ovate-lanceolate—all
