Musci. (mosses.) (71) 671 



horizontal surfaces, it assumes an upright and larger growth, and becomes H. 

 Marylandicum and H. Carolinianum, Mull. Synop. (Eu.) 



26. H. microcarpum, C. Mull. Moncecious ; growth close and en- 

 tangled ; branches short, recurved ; leaves shining, bright green or yellowish, 

 narrowly oblong-lanceolate, concave, obsoletely short-costate ; capsule more or 

 less symmetrical, erect or inclined ; ciliolse of the peristome often absent. 

 (Leskea adnata, Miclix.) — Trunks of trees, in the Southern States. 



27. H. cylindricarpuiiB, Mull. Synop. (1851). Dicecious; stems 

 prostrate, subpinnately branched ; leaves narrowly lanceolate, with a long-atten- 

 uated serrate point, bifariously imbricated, falcate-secund, ecostate ; capsule 

 elongated-cylindrical, regular and erect, or slightly unequal and curved ; ciliolse 

 of the inner peristome rudimentary. (Muse. Alleghan. No. 60. Leskea tenuiros- 

 tris, W. P. Sell.; Ed. 1, 1848.) — Grows in close, yellowish, shining mats on 

 logs, in woods, Alleghany Mountains and Central Ohio. 



28. H. reciirvans, Schwsegr. Monoecious ; forms palish-green shining 

 mats, fruiting abundantly ; leaves bifariously imbricating, ovate-lanceolate from 

 a constricted base, secund-falcate, strongly serrate near the point, with two faint 

 costse at the base ; capsule short-oval, horizontal-incurved. — Decayed logs, Alle- 

 ghany Mountains. Very common, and variable in size. 



29. H. albulfim, C. Mull. Moncecious; stems and branches flat; leaves 

 lax, spreading, bifarious, oblong-lanceolate, slightly serrulate and subsecund, 

 with two veiy short costse at the base ; capsule oblong, cernuous. (H. subsim- 

 plex. Hook, Sf Wils. ; Muse. Alleghan.) — Moist places, on the ground and on 

 decayed wood. — A small Moss, with delicate pellucid foliage, varying from 

 dark to pale-whitish green : difficult to distinguish fi-om small forms of H. re- 

 cui"vans : the alar cellules less distinct and inflated. 



§ 10. LIMNOBIUM, Biyol. Europ. — Main stems prostrate, irregularly branched, 

 ascending : leaves varying from orbicular to elongated-lanceolate, shortly unicostate 

 or obsoletely bicostate ; cellules oblong or linear : capsule turgid-ovate or oblong, cer- 

 nuous : operculum hemispherical, apiculate, or short-conic. 



SO. H. eugyrmm, Bryol. Europ. (Muse. Bor.-Amer. No. 303.) Mo- 

 ncecious ; main-stems leafless below, rigid ; branches irregularly divided ; leaves 

 broadly ovate-lanceolate and oblong-lanceolate, shortly acuminate, concave, more 

 or less complicate and contorted, secund, subfalcate, shortly bicostate, the ex- 

 cavated basal angles composed of large pellucid fulvous cellules ; capsule oblong, 

 cernuous-incurved ; annulus very broad. (H. palustre, James, in Proceed. Acad. 

 Nat. Sci. 1855. Limnobium rufescens, Schimp. ined.) — White Mountains, New 

 Hampshire, Oakes, James. Smoky Mountains, Tennessee, Rugel. — H. palustre, 

 L., Bryol. Europ., (common in British America, Drummond,) not yet found within 

 our limits, has no annulus ; and the basal angles of the leaves are diiFerent. (Eu.) 



31. H. mdlle, Dickson. Moncecious; somewhat larger than the preced- 

 ing ; branches thicker and more obtuse, not so divided ; leaves flaccid, widely 

 spreading, subsecund, roundish, apiculate, entire or erose-denticulate at the apex ; 

 capsule short, tm-gid. — Mountain ri-\Txlets, North Carolina, Curtis, Lesquereux. 

 (Eu.) 



