MUSCI. (MOSSES.) 681 



To p. 628. 



3. Didymodon cylindricus, Br. & Sch. Dioecious ; stems caespi- 

 tose, 4" -10" high, branched; leaves linear-acuminate, spreading, flexuous, 

 more or less undulate on the plane margins, costate to the apex ; capsule nar- 

 rowly cylindrical, annulate, its walls thin ; pedicel slender, yellowish ; operculum 

 rostrate from a conic base ; teeth of the peristome remotely articulated. Ches- 

 ter County, Pennsylvania, James. (Eu.) 



To p. 648. 



10. Mil ill III spinulosuin, Bryol. Europ. Hermaphrodite, caespitose , 

 stems I'-l^' high, radiculose; lower leaves minute, remote, reddish, obovate ; 

 upper leaves large, crowded, bright green, decurrent, broadly obovate and ob- 

 long-spatulate, shortly acuminate, with a thickened, doubly spinulose-dentate 

 border ; capsule oval, rather pendulous ; operculum conic, shortly rostrate ; 

 pedicels aggregated. White Mountains of New Hampshire, James. Very 

 near M. spinosum, Bryol. Europ., found in British America by Drummond, but 

 that has a dioecious inflorescence. (Eu.) 



To p. 655. 



Pilot ricliuiii cymlrifolilim, n. sp. Dioecious; main stems 2' -3' 

 long, rhizoma-like, creeping, filiform, sparingly radiculose, with distant minute 

 triangular-lanceolate leaves, scarcely visible to the naked eye ; primary branches 

 rather slender, erect, I'-l^ 7 long, simple or irregularly and pinnately ramu- 

 lose ; leaves pale green, closely imbricated in -5 distinct spiral rows, lanceolate, 

 acuminate, strongly cymbiform-concave, their upper half with the margins 

 serrulate, recurved or platter-edged, the point flat ; costa pcrcurrent ; areolation 

 close, linear-fusiform, flexuose ; the cellules at the basal angles minute-quadrate, 

 opaque ; fertile flowers numerous, paraphysated. " From a tree on a hum- 

 mock, E. Florida." ex herb. Gray. 



Meteorium 1 pendulum, n. sp. Dioecious (?); stems 7' -8' long, 

 divided, divisions with distant branches, all filiform, pendulous and flexile ; 

 leaves at the base of the branches broader and 2-ranked, elsewhere narrower and 

 erect-patent every way, all linear-lanceolate, tapering into a long and slender ser- 

 rulate point, costate beyond the middle, papillose on the back ; the areolatiou 

 close, linear, with a small disk of minute quadrate cellules in each of the basal 

 angles; capsule small, oblong-oval, on a short axillary pedicel (l"-2" long) ; 

 peristome double, the exterior 16 linear-lanceolate articulated teeth, more or less 

 fissile along the medial line ; the interior 16 perforated cilia, arising from a some- 

 what broad membrane ; operculum conic-rostellate ; spores large ; perichaeth 

 small; vaginula emergent ; calyptra not seen. Western Louisiana, Teinturier, 

 Prof. Ridddl. A pale-yellowish Moss, with thread-like stems and branches. 



To p. 661. 



Iflyurella Careyana, add: Capsule oval, with a conspicuous col- 

 lum, inclined, ainulate ; cilia of the inner peristome nodulose , operculum heni< 

 ispherical-conic , pedicels 3'' -4" .igh. Brattleboroujrh, Ve\aiont, Frost. 



Hypiiuni palllStre, L. (see p. 671) has also been found, with the last, 

 ty Mr. Frost. 



