556. F. ANTIPYRETICA. L. St. very long, often 1ft., with long spreading branches; l. ovate-lanceolate, very concave, keeled, nerveless, all on each branch with one margin reflexed on the same side, the other plane, sometimes serrulate near apex; caps. oval or ovate, immersed; lid long conical acute. Streams and stagnant water. VI. VII. 557. F. SQUARROSA. L. St. shorter, but elongate; br. numerous, crowded fasciculate, not spreading; l. lanceolate or oblong-lanceolate, concave, not keeled, margin not reflexed, nerveless, entire; caps. similar to last. Mountain rivulets. VI. VII. 90. DICHELYMA. MYRIN. 558. D. CAPILLACEUM. Dicks. St. 3–6in. slender, brittle, with a few distichous spreading branches; l. erecto-patent, secund, subulate-setaceous, keeled, with a long excurrent nerve; per. l. long convolute, nerveless; caps. short oval, almost immersed; lid large conical, beaked. Alpine rivulets. Summer. APPENDIX. I. ADDITIONAL SPECIES. SPHAGNUM LARICINUM. Spruce. (_S. neglectum_, Angst.) St. 4–6in. solid, _the bark_ pale, of 2–3 layers of cells. Br. fascicles more or less crowded, of 3–4 br., of which one or two are divergent, the others pendent, but not appressed nor acute. St. l. small ovate, cucullate at apex, at last minutely fimbriate, patent or reflexed; basal cells hyaline utricular, the middle and lateral very narrow, the apical rhomboid, with scarcely any fibres or pores; br. l. sub-secund, recurved at point, ovate, shortly and bluntly acuminate, the point with 3–5 teeth, margin recurved above, rather broadly bordered; hyaline cells serpentine elongate, with many threads and pores; caps. scarcely exserted. [Dr. Braithwaite, Monthly Micros. Jour., 1872, p. 159.] Deep bogs. Terrington Carr, Yorkshire, 1846 (Spruce); Holyhead (Wilson); Braemar, 1868 (Hunt). DICRANUM UNDULATUM. Ehr. St. naked and decumbent at base; l. patulous, upper falcato-secund or appressed and slightly secund from a broad oblong base, lanceolate, gradually narrowed into a dagger-shaped point ending somewhat abruptly in the acute apex, beautifully undulate in the upper half, carinate; margin revolute below, coarsely serrate above with spinulose irregular teeth; nerve flattened, narrow and extended to apex, narrowly two-winged and _serrate_ at back; cells elongate oblong or elongate hexagonal, those of central base sub-quadrate and hyaline. [Dr. Braithwaite, in _Grevillea_, i., 108.] Stockton Forest, near York, 1842 (Spruce); again 1872 (Mr. Anderson). It has doubtless been frequently overlooked or mistaken for _D. scoparium_ or _D. Bonjeanii_ (_palustre_).