269 
dense trabeculatis, linea media angusta notatis; membrana interna. 
byalina, cruribus carinatis leviter trabeculatis, ciliis rudimentariis 
interjectis.  Calyptra angusta subulata, semicucullata, latere fissa, 
bas erenulata:  Perigonium pusillum; foliis ovatis acutis, integer- 
rimis, enervibus, cellulis bryoideis hyalinis, antheridiis ellipticis, 
intense coloratis, paraphysibus nullis. — Parce sub Nr. 7423. 
Hypno microstegio C. M. maxime affine, seta graciliore et 
longiore primo visu discernendum. 
91. Rhizo-Hypnum Versipoma mn. sp. Microthamnium Mitten. 
Monoicum; late prostratum ramosissimum, plumose  molle, 
pallide viride.  Caulis adscendens microthamnius, basi purpureo- 
fusco-tomentosus , laxifolius; coma irregularis ramosa, apice decur- 
vato-acrorhizans. Folia caulina remota, squarroso-patula e basi 
Semiamplexicaulia cordata, reniforme-triangularia, lanceolato-acumi- 
nata, apice parce dentata, enervia; cellulis alaribus subrectangulis 
Crassiretis pellucidis, intermediis densis linearibus, lateralibus et 
Superioribus laxioribus subpellucidis; folia ramorum undique imbri- 
cata "Subdistiche patula, erecta, ovato-lanceolata acuminata, fere 
undique remote denticulata; nervis pallidis fere ad medium folii 
Produetis, interdum obsoletis; cellulis linearibus dense aggregatis 
reticulata, subdiaphana; perigonalia ovata longe lanceolata acu- 
minata subintegerrima enervia, laxius' reticulata pellucida; folia 
Perichætialia e basi latiore ovato-lanceolata loriforme - acuminata, 
fapillari-setacea integerrima, enervia, cellulis basi rectangulis, 
Yersus folii apicem linearibus, subula diaphana.  Seta ”subuncialis 
RB Tubens, apice paulo incrassata. Theca prius obovata horizontalis, 
Mw Crasse conico-subulato recto, deinde nutans et versiflexa, 
deopereulata Ore constricto; peristomii dentibus externis lanceolatis, 
Mongissime subulato-acuminatis, basi modice, medio remote trabecu- 
Muti, apice capillaribus hyalinis; inter. cruribus luteis carinatis 
Mm Fibug; lanceolatis, acuminatis, subulatis, ciliis. brevibus  binis 
foribus interpositis; calyptra pallida glabra. — Nr. 9096. 
… Åb H. acrorrhizo Hornsch. differt: mollitie (nec ramis rigidis) 
minus dentatis (nec serratis) theca curvata deopereulata ore 
