Nearly allied to D. longueturn, Hook. (Muse. Exot. 1. 139), but differs in the more robust habit, leaves longer, wider, more rigid, less setaceous above, without serratures, the nerve broader and thicker, capside longer, peristome smaller, the teeth not divided to the base as in that moss.
Plate CLII. Fig. III. — 1, tuft of the natural size; 2, leaf; 3, perichaetial ditto; 4,theca; 5, calyptra; 6, theca and peristome ; 7, teeth : — all magnified.
2 Dicranum? imponens, Mont.; in Toy. cm Pole Slid, Bot. Crypt, p. 298.
Hab. Strait of Magalhaens, MM. Hombron et Jacquinot. Hermite Island, Cape Horn; on the bills (barren).
Not having seen original specimens, it is necessary to mention that in the plant we refer to this species, the leaves ai - e subsecund and entire; while in other respects they agree with the description quoted. D.penicillatum, Hornsch., to which Dr. Montagne compares his moss, belongs to the genus Campylopus, Brid.
3. Dicranum rolustum, Hook.fil.et TYils.; caule elongato subramoso, foliis falcato-secundis longissimis lineari-laneeolatis setaceo-attenuatis convolutis spinuloso-serrulatis, nervo latiusculo excurrente, perichretialibus intimis obtusis enerviis, theca cylindracea inclinata curvnla strumulosa, operculo longirostro. D. scoparium, /3. refiectens, Mont, in Toy. au Pole Sud, Pot. Crypt, p. 297 ? (Tab. CLII. fig. VIII.)
Hab. Hermite Island, Cape Horn ; in woods, on the trunks and roots of trees, and in the open country, growing in large tufts, very abundant. Kerguelen's Land, Br. Lyall.
Caules 4-vmciales et ultra, robusti, parce ramosi, subinde incurvi, siccitate parum fragiles. Folia conferta, 6-7 lineas longa, apice setacea, inferne convoluta, superne carinata; margine dorsoque spimdoso-serrulata, viridia, iivferiora squalida, perieheetialia exteriora squarrosa, basi rotuudato-ovata, acuminata, interiora erecta, convoluta, 3-linearia, elliptico-oblonga, obtusa cum mucrone lineari longiusculo, enema. Yaginula linearis, elongata. Seta 7-8 lin. longa, crassiuscula, siccitate vix tortilis, rubella. Theca cylindracea, inclinata, curvvda, rufo-brunnea, stru- mulosa. Peristoma dentes bifidi, rubri. Operculum theca paido longius. Calyptra stramiuea, apice fusca.
A larger and more robust moss than D.pungens, nobis, which it much resembles, differing in its longer leaves, which are more decidedly serrated, less convolute, nerve broader and excurrent, the perichastial ones much shorter, and wholly different in shape, capsule longer and strumose, peristome larger. In general aspect it is not unlike the British B. majus, Turn., but is distinguished by the very long and attenuated leaves.
Plate CLII. Fig. Till. — 1, moss, natural size; 2 and 3, leaves; 1 and 5, thecae : — all magnified.
4. Dicranum jnmgens, Hook. fil. et Wils.; vid. Pt. 1. p. 129. t. 59. f. 1.
Var. 2. foliis vix secundis.
Var. 3. foliis minoribus, vix secundis.
Var. 4. lucidum ; foliis aureo-nitentibus falcato-secundis. Hab. Hermite Island, Cape Horn. Vars. 1 and 4 (barren) on rocks, trunks of trees, and the ground, very abundant. Kerguelen's Land; Vars. 2 and 4, Cumberland Bay, R. M'Cormich, Esq.
The var. 4 is a very elegant moss, differing in aspect from the other varieties, but we are unable to detect sufficient characters to establish it as a species.
5. Dicranum Boryanvm, Schwaegr., Sitppl. II. vol.i. p. 71. t.121. Cecalyphum dichotornum, P.Beauv. Prodr. p. 41. Oncophorus dichotomus, Brid. Br. Univ. vol. i. p. 401.
Hab. Kerguelen's Land, common on the hills in large dense tufts, barren.
