ACOTYLEDONES. 239 



Desc. Muscus caespitosus, semuncialis. Caules breves, 

 dense foliati, ssepius indivisi, quandoque paruin ramosi. 

 FoJia mucronc brovissimo, minute areolata, marginil)as 

 anguste revolutis, ncrvo valido, siccitatc adprcssa et pavum 

 torta. Seta caule loiigior, Isevis, fusca. Ccqmda Isevis, aeqiii- 

 latera. Opercul/nu coniciim, aciitum, paulo inclinans, capsula 

 diniidiobrcvius, tenuissime spiraliter striatum. Ferisfomiuni 

 album, dentibus 32, filiformibus, per paria approximatis, 

 dimidioquc inferiore trabeculis connexis, supra distinctis, 

 apicibus parum tortis. Calypira Ja^vis. 



Obs. Inter Barbidam et Didymodon media. 



87. Syntrichia ruraijs, Weh. et j\Iohr tasch. p. 215. 

 Voit mus. lierhip. p. 52. Br id. mant, p. 98. 



Tortula ruralis, Smith brit. 3, J9. 1254. En(jl bot, 2070. 

 Turner wusc, liibern. p. 50. Sw. wnse. suec. p. 39. 

 ScJnvaec/r. suppl 1, sect. \, p. 137. WaUlenb. carpat. p. 

 338. Muse. brit. p. 31, t. 12. Hoolcer scot. par. 2, p. 

 127. Richardson in Franklin s journ. p. lob. 



Barbula ruralis, Iledw. sp. muse. p. 121. Wahlenb. lapp. 

 318. . 



Obs. Specimina duo tantum et sine fructificatione. 



88. Syntrichia mucronifolia, caule ramoso, foliis 

 ovato-oblongis siccitate adpressis : pilo integerrimo latitudine 

 folii breviore, capsula cylindracea inasquilatera erecta duplo 

 longiore ; operculo subulato-conico. 



Tortula mucronifolia, Sehicaegr. suppl. 1, sect. 1, ;?. 130, 

 t 35? Wahlenb. lapp. p. 317? 



Desc. Muscus v. csespitosus v. aliis intermistus. Ca?des 

 erecti, breves, semper ramosi, rauiis fastigiatis, dense foliati. 

 Folia concava, marginibus integerrimis, infra medium leviter 

 recurvis, minute areolatis, areolis baseos paulo laxiori- 

 bus, nervo valido in pilum integerrimum excurrente, ma- 

 dore erecto-patentibus, siccitate imbricatis adpressis nee 

 contortis, pilo parum flexo. Seta capsula baud duplo 

 longior, concolor, siccitate tortilis. Capsula saturate 

 castanea, laevis. Operculum badium, per lentem pluries 

 augentem spiraliter striatum, dimidium rapsulnn vix aequans. 



