Musci. (mosses.) (39) 639 



4. IS. microcdrpiim, Brid. Tufts rather compact; stems slender, 

 fasciculately branched, ■with numerous short branchlets ; leaves yellowish, spread- 

 ing, recurved or falcate-secund, lanceolate, tapering, with a short diaphanous re- 

 motely serrated hair-point ; areolte everywhere elongated and sinuous ; capsule 

 small, oblong ; teeth of the peristome short. — Dry rocks, Alleghany Moun- 

 tains. (Eu.) 



5. B. laungindsuill, Brid. Patches loose, extensive, hoary; stems 

 much elongated (4' -10'), slender, flexuose, fragile, with fasciculate branches; 

 leaves crowded, erect-patent, rather flexuous, linear-lanceolate, tapering into a 

 long diaphanous erose-dentate hair-point ; areola elongated and sinuous ; cap- 

 sule small, ovate-oval, on a short scabrous pedicel ; teeth of peristome very long, 

 2-cleft, filiform. — Eocks, White Moimtains, New Hampshire, Oakes. (Eu.) 



6. B. canescens, Brid. Patches loose, large, yellowish-green or hoary; 

 stems 2' -4' long, more or less fasciculately branched; leaves spreading, re- 

 curved, ovate-lanceolate, with a shoit erose-denticulate hair-point, papiUose on 

 both surfaces, the margins reciurved; areolation as in No. 5; capsule ovate- 

 oblong, on a long smooth pedicel ; teeth of the peristome as long as the capsule, 

 very slender, 2-parted, nodulose. — With the last, Oakes. (Eu.) 



Tribe XVI. HEDWIGIE^. 



40. HEDl^IGIA, Ehrh. (Tab. H.) 



Calyptra small, conic, smooth, sometimes hairy. Operculum plano-convex, 

 with or without a central papilla. Capsule globose, erect, entirely immersed, 

 very short-pedicellate. Peristome none. Inflorescence monoecious : male flower 

 gemmiform, axillary. — Habit and mode of growth like Schistidium: stems di- 

 chotomously or irregularly branched; leaves spreading, ovate-lanceolate, pa- 

 pillose, not costate, the apex diaphanous, erose-denticulate or fringed on the 

 margins ; cellules at the central base elongated and subflexuous, elsewhere small 

 and quadrate. (Dedicated to the distinguished cryptogamist, J. G. Hedwig.) 



1. H. cillata; Ehrh. Stems l'-4' long, rooting at the base only; leaves 

 sometimes secund, with a longer or shorter diaphanous point. — On rocks and 

 bowlders ; very common, forming large and hoary glaucous-green patches. 

 (Tab. n.) (Eu.) 



Tribe XVH. BUXBAUMIE^. 



41. BUXBAtlMIA, HaUer. (Tab. m.) 



Calyptra cylindrical-campanulate, small, covering the operculum only. Oper- 

 culum small, conic, obtuse. Capsule large, elongated-ovate, oblique, flat on the 

 upper side, convex and gibbous underneath, apophysate, long-pediceUate. Peri- 

 stome double C?) ; the exterior an irregularly incised membrane, composed of 

 3 or 4 layers of elongated cellular tissue, or 16 linear moniliform papillose teeth ; 

 the interior a whitish and conic plaited membrane. Inflorescence moncecious : 

 male flower gemmiform; antheridium solitary, roundish. — Minute annuals or 

 biennials ; stems scarcely any, partly bruied in the soil ; leaves few (5 or 6), scale- 



