764* 374?. Hypnum. 14?. MUSCI. Pl.cell.foL 
n. Stem and leaves not flat ; leaves facing one waij^ 1 -rilled* 
49. Hypnum fllicinum . Fern feather-moss. 
Stem rather pinnate; leaves , especially the upper, sickle- 
like, facing one way, broad, ovate, pointed, serrated, main- 
rib reaching to the tip; capsule oblong, ovate, bent, droop- 
ing ; lid conical. 
Hypnum repens filicinum crispum, Raii Syn. 85,32. 
Hypnum filicinum, Lin. S. P. 1590; Engl. Bot. 1570. 
Hypnum dubium, Engl. Bot. 2126. 
Hypnum fallax, Bridel Muse. 3, 2; Engl. Bot. 
On bogs and the side of streams. 
50. Hypnum atrovirens. Dark-green feather-moss. 
Stem variously branched, lying down ; leaves slightly 
facing one way, broad, ovate; tip narrow, blunt; main rib 
running nearly to the tip ; capsule ovate, drooping ; lid 
conical. 
Hypnum atrovirens, Dickson Crypt. 2, 10; Engl. Bot. 2422. 
Hypnum filameutosum, Dickson Crypt. 2, 11. 
Hypnum attenuatum, Dickson Crypt. 2, 13; Engl. Bot. 2420. 
Leskea incurvata, Hedw. S. Muse. 53. 
On mountain rocks and trees. 
51. Hypnum palustre. Marsh feather-moss. 
Leaves facing one way, ovate, rather pointed, concave, 
uncut, edges turned in above ; main rib short, often forked, 
sometimes faint ; capsule oblong, ovate, drooping ; lid 
conical. 
Hypnum heterophyllum aquaticum polycephalum repens, Dillen. Muse. 
293. 
Hypnum palustre, Lin. S. P. 1593 ; Engl. Bot. 1665. 
Hypnum Juridum, Hedw. S. Muse. 291. 
Hypnum fiuviatile, 1'urner M. Hib. 192; Engl. Bot. 1303, not of Hed- 
wig. 
Hypnum ad natum, Turner M. Hib. 165; Engl. Bot. 2406, not of Hed- 
wig. 
On wet rocks, and banks of rivers and of pools. 
52. Hypnum aduncum. Crooked feather-moss. 
Leaves sicklelike, facing one way, lanceolate, awlshape, 
concave or almost semicylindrical, uncut; main rib not 
reaching the tip; capsule oblong, ovate, bent, drooping; 
lid conical. 
Hypnum palustre erectum, summitatibus erectis, Raii Syn. SO, 15. 
Hypnum aduncum, Lin. S. P. 1592. 
Hypnum revolvens, Swartz Ml. Suec. 58 ; Engl. Bot. 2073. 
On bogs. 
