Gen. RHIZOGONIUM, Brid.

58. R. SPINIFORME, Bruch.; Hedw. Musc. Frond. 3, t. 25. — Ground, near the roots of trees; common.

Gen. BRYUM, Dill.

59. B. ARGENTEUM, L.; Bryol. Europ. t. 384; var. lanatum. the ground; common.

60. B. CORONATUM, Schwægr. Suppl. t. 71.- Old logs in fields. 61. B. CÆSPITICIUM, L.; Bryol. Europ. t. 374. On the ground. 62. B. LEPTOCLADON (sp. nov.): dioicum tenellum laxe cæspitosum flavescenti-viride; caulibus brevissimis prostratis, innovationibus permultis erectis julaceis tenuissimis remotifoliis ; foliis appressis oblongis breviter acutatis cymbiformi-concavis e cellulis amplissimis pellucidis inferne oblongis superne elongato-rhomboideis areolatis, unica serie cellularum indistincte marginatis, costa cum apice evanida; capsula oblongo-pyriformi leniter inclinata late annulata; perist. int. ciliis lanceolato-linearibus vix pertusis, ciliolis nullis; operculo hemisphæricoapiculato. Moist places on the ground. A very small species, forming loose yellowish-green patches, well marked by its numerous thread-like innovations, lines high, and about of a line wide. Leaves with a large areolation in proportion to their size. Pedicels 5-6 lines high. This species belongs to Muller's section Areodictyon of Bryum.

63. B. OVALIFOLIUM (sp. nov.): dioicum cæspitans; foliis laxiusculis ovali-oblongis obtusiusculis modice cochleariformi-concavis, marginibus planis erectis, apice subincurva lenissime serrulatis, areolatione laxa, costa vix excurrente; capsula oblongo- vel clavato-pyriformi pendula. Banks of rivulets. A medium-sized species, distinguished from its allies by its oblong-oval, borderless leaves, with erect margins.

Gen. MNIUM, Linn.

64. M. WRIGHTII (sp. nov.): dioicum cæspitosum; caule arcuatoascendente simplici complanato-folioso; foliis dimorphis lateralibus ovali-obovatis apiculatis dorsalibus accessoriisve multo minoribus anguste lanceolatis biseriatis, omnibus dissitis incrassato-marginatis ultra medium costatis laxe rhomboideo-areolatis, apice serrulatis; capsula in pedicello erecto pendula pyriformi; operculo depresso-convexo: flore masculo terminali disciformi, perigonialibus lineari-lanceolatis. - Shady

banks of mountain rivulets.-This remarkable moss, in its dimorphous leaves and their arrangement, may be looked upon as the acrocarpous analogue of Rhacopilum, as Calomnion is of Hypopterygium. About the size of Mnium cuspidatum. Leaves thin, rather firm, at first pale green, when old vinous red, the margins and costa deepercolored. Pedicels 1 inch long, occasionally two from the same perichath.

Gen. CLASMATODON, H. & W.

65. C. PARVULUS, Hampe; Sulliv. Mosses of U. States, p. 60, & Icones Musc. ined. t. 79.- On roots and trunks of trees. The specimens vary from those of the Southern United States in a fuller development of the teeth of the peristome, and in the occasional presence of a few scattered hairs on the matured calyptra.

Gen. FABRONIA, Raddi.

66. F. CUBENSIS (sp. nov.): monoica, statura F. pusilla; foliis ovato-lanceolatis integerrimis ultra medium costatis, cellulis ovalirhomboideis laxiusculis chlorophyllosis, alaribus subquadratis granulosis; capsula oblonga subapophysata; perist. ext. dentibus sedecem per paria approximatis fuscidulis longiusculis, int. ciliis octo æquilongis filiformibus; operculo conico acuto. On trees. · Remarkable for its

double peristome, the inner of 8 cilia.

Gen. CRYPHÆA, Mohr.

67. C. FILIFORMIS, Swartz.; Hedw. Musc. Frond. 3, t. 16.— On coffee-bushes. The excurrent portion of the costa of the perichætial leaves is scabrous.

68. C.? LEPTOCLADA (sp. nov.): majuscula rigida; caule primario repente aphyllo, secundario pendulo subdendroideo-ramoso, ramis hic illic ramulos singulos fasciculatosve minutissimos appresso-foliosos proferentibus; foliis patentibus e basi subauriculata ovato- vel oblongoacuminatis concavis margine erectis superne leniter serrulatis, cellulis alaribus permultis quadratis mediis lineari-fusiformibus prosenchymatosis apicalibus elongato-ellipticis, costa debili subpercurrente; capsula desiderata. Bushes in ravines. Grows in rather large masses. Secondary stems about 2 inches long, 1-2 lines wide: foliage pale green and yellowish. A noticeable feature is the lateral fascicles of very minute straight shoots from the upper part of the branches: these shoots with their distant closely appressed ecostate lanceolate leaves are about 2 lines long and of a line wide, nearly concealed by the principal leaves.

Gen. ANOMODON, H. & T.

69. A. ATTENUATUS, Hedw.; Bryol. Europ. t. 475. — Rocks in ravines.

Gen. LESKEA, Hedw.

70. L. CAPILLARIS, Hedw. Musc. Frond. 4, p. 25, t. 10.

Gen. CYLINDROTHECIUM, Schimp.

On trees.

71. C. MACROPODIUM, Hedw. Musc. Frond. 3, p. 55, t. 23. mountain-sides.

72. C. AMPLIRETE (sp. nov.): robustum pallide virens nitidum late cæspitosum appressum dichotome divisum; ramis latis complanatis obtusis; foliis oblongis apice plus minus obtusis ibidemque grossius serratis, cellulis amplis; capsula deficiente. - Rocky ledges in woods. The characters above given appear to distinguish this species from any of its known congeners.

Gen. HELICOPHYLLUM, Brid.

73. H. TORQUATUM, Brid.; Hook. Musc. Exot. t. 41..

wood.

Gen. RHACOPILUM, Beauv.

On decayed

74. R. TOMENTOSUM, Brid.; Hedw. Musc. Frond. 4, t. 19.- On logs in woods.

Gen. PILOTRICHUM, Beauv.

75. P. UNDULATUM, Beauv.; Hedw. Musc. Frond. 3, p. 51, t. 21. Trunks of trees.

76. P. FILICINUM, Beauv.; Hedw. l. c. t. 18. Rocks in dense woods.

77. P. CYMBIFOLIUM, Sulliv. Mosses U States, p. 81, & Icon. Musc. ined. t. 76.

78. P. LOPHOPHYLLUM (sp. nov.): dioicum ? pusillum; caule primario repente, secundario erecto vix unciali inferne simplici reflexofolioso superne pinnatim et bipinnatim dendroideo-ramoso; ramis ramulisque rigidis tenuissimis brevibus; foliis trifariis erecto-patentibus ovatis breviter acuminatis concavis subserrulatis sparsim papillosis pellucidis, cellulis oblongis ab invicem discretis, costis binis infra apicem abruptis dorso late cristatis; capsula ovali-oblonga ramigena brevipedicellata annulata; perist. ext. dent. lanceolato-subulatis, ciliis linearibus brevioribus; calyptra mitriformi sparsim erecto-pilosa operculum

conico-subulatum solum tegente; perichætialibus apertis elongato-lanceolatis breviter bicostatis. -Trees and decayed logs. — A small palegreen species scarcely 1 inch high, of a dendroid habit, with branches and branchlets very slender, about of a line wide. Near P. compositum; but that species, if the figure and descriptions of it are reliable, is a much larger plant, with different habit and leaves.

Gen. METEORIUM, Dz. & Mb.

79. M. MACRANTHUM, D. & M. Pugil. Fl. Bryol. Venez. p. 47, Trees and bushes.

t. 12.

80. M. PATULUM, D. & M. op. cit. p. 21, t. 10. On trees.

81. M. CRINITUM, Sulliv. in U. S. Expl. Exped. p. 22, t. 20. — On bushes in dense thickets.

82. M. TRICHOPHORUM, Mont. Ann. d. Sci. Nat. (1843), p. 236. On trees.

-

83. M. aff. nigricanti? - Without fruit; probably a new species: materials too imperfect to furnish a specific character. 84. M. ILLECEBRUM, C. Mull. Synop. Musc. 2, p. 137. mountains.

Gen. HOOKERIA, Smith.

On high

85. H. CUBENSIS (sp. nov.): dioica? dense cæspitans flavo-viridis ; caule prostrata, ramis ascendentibus subsimplicibus compressis latis; foliis oblongis subobovato-oblongisve breviter acuminulatis pellucidis ampliuscule elliptico-areolatis immarginatis superne serratis, costis binis tenuibus ad medium evanidis; capsula in pedicello brevi superne scabro oblongo-elliptica erecta exannulata; perist. dent. longissimis angustissimis late marginatis linea mediali angusta notatis, ciliis æquilongis, membrana basilari vix ulla; operculo e basi elongato-conica subulato; calyptra mitriformi pilis latis sursum curvatis adspersa basi 8-10 fida. On bushes in thick woods. The erect capsule, pilose calyptra, and pedicel scabrous only on its upper half, sufficiently distinguish this species.

86. H. CYMBIFOLIA, Hampe in Linnæa, 1855, p. 783. — Logs in dense woods.

87. H. ADNATA, H. & W. in Fl. N. Zeal. p. 123, t. 93, f. 4. — Var. foliis oblongioribus minus acuminatis densius areolatis. On the bark of trees.

88. H. VARIANS (sp. nov.): polygama dense cæspitosa flavicans; caulibus ramisque complanatis; foliis ovato-acuminatis et lanceolatis

flaccidis hyalinis amplissime rotundato-oblongoque-areolatis vix serrulatis limbo angusto e cellularum serie unica circumductis, ad medium tenuiter bicostatis; capsula elongato-oblonga horizontali; operculo conico subulato; calyptra mitriformi glabra, basi multifida; perist. H. læte-virentis. — Logs in dense woods. Near H. Olfersiana and H. albicans, but the first species has entire leaves, an obovate capsule, and a calyptra scabrous at its apex; in the second, the leaf is oblong, shortly acuminate, and strongly dentate at apex. Specimens under this number (88) have synoicous and monoicous inflorescence.

89. H. VARIANS, var. infloresc. monoica colore glauco-viridi. — On decayed logs in forests.

90. H. VARIANS, var. infloresc. monoica foliis oblongioribus altius bicostatis. Banks, mountain-sides.

91. H. INCURVA, Hook. & Grev.; Schwægr. Suppl. t. 275.-Logs in dense palm-woods.

92. H. MERKELII, Hornsch. Fl. Bras. 1, p. 62, t. 3. Same locality as the last.

93. H. PAPILLATA, Mont. Ann. d. Sci. Nat. 1845, 4, p. 93. — Decayed logs in woods.

Gen. HYPNUM, Linn.

94. H. EXILISSIMUM (sp. nov.): monoicum minutissimum viride nitidum cæspitulosum; caule arcte repente; ramis capillaribus erectis simplicibus ramulosisque; foliis erecto-patentibus anguste oblongolanceolatis sensim acuminatis serrulatis mediotinus costatis, laxe areolatis, cellulis lineari-oblongis pellucidis alaribus numerosis quadratis concoloribus; capsula oblonga subæquali parum inclinata macrostoma ; peristomio eciliolato; sporis majusculis; operculo oblique acicularirostrato. - On the bark of trees. - H. acanthophyllum, Mont., from the description (Mull. 2, p. 398) appears to be very near this moss, but differs in its horizontal capsule and carinate leaves destitute of special alar cells.

95. H. MINUTULUM, Hedw.; Bryol. Europ. t. 481.- Decayed logs and stumps in woods.

96. H. SCHISTOCALYX, C. Mull. Synop. 2, p. 691?-Locality same as the last.

97. H. TAMARISCINUM, Dill.; Bryol. Europ. t. 482 and 483. — Decayed logs.

98. H. INVOLVENS, Hedw. Musc. Frond. 4, t. 11. Same as the last.