246 S. O. Lindberg. 



Hah. ad Dui, ef et fr., Aug. 1861, Glehn. 



Cœspites laxi, intricati, brunneo-luteoli, apicibus virides, opaci. Cmdis usque ad 10 cm. 

 longus, repens et hie illic fasciculos radicularum nigros gereiis, flexuosus, paraphylla milla 

 ostendens, subpinnatus, ramis remotis, 1 — 2 cm. longis et cum foliis 1,5 — 2,5 mm. crassis, 

 erectis, flexuosulis, acutiusculis, robustioribus sajpe denuo remote ramulosis et repentibus. 

 FoUa remotiuscula, basi anguste et longe decurrentia, erecto-patentia, apice subsecunda, le- 

 niter flexuosa, lata et profunde concava, biplicata, oblongo-lanceolata, fera sensim angustata 

 in acumen longissimum et acutissimum, margine inferna leniter recurvo, ad medium et in basi 

 acuminis irregulariter late reflexo, integerrimo, acuminis tarnen integro, nervo concolori, ca- 

 rinato dorsoque prominente et Isevissimo, superne sensim angustiore et in summe acumine 

 dissoluto; celluUe seriatse, valde incrassatse et lîcvissimaj, angulares quadratse, sat minutse, 

 permultse, ad tertiam partem folii adscendentes et sensim pauciores, median.-e longiores, rect- 

 angulo-rhombeœ, superiores rhombeaj. Periciuetia pauca, in caule primario et in ramis robu- 

 stioribus ramulosisque affixa, vix radiculosa. Bracteœ eorum circiter 16, vaginantes et apice 

 patentes, haud plicatœ, ovales, (intimœ abruptissime) longe acuminatœ, acumine tortello et 

 patenti, margine integro et ubique piano, nervo tenui in basi acuminis dissoluto, cellulis in- 

 crassatis, lœvissimis, basilaribus majoribus, subrectangularibus, ceteris rhombeis. Vaginula 

 oblongo-cylindrica, pistillidia sterilia et paraphyses nonnuUa gerens. Seta 1,5 cm. alta, 

 erecta, stricta, gracilis, lievissiraa, brunnea, ad medium siuistrorsum, superne dextrorsum torta. 

 Theca 2 mm. alta et 1 mm. crassa, erecta, regularis, brunneola, lœvissima, evacuata et an- 

 tiqua immutata, sed fusco-brunnea et nitidula, elliptico-ovalis, ore distincte angustiore, pa- 

 chydermis, cellulis irregulariter quadratis et valde incrassatis, stomata sat crebra et minuta, 

 superficialia, fusco-brunnea (ut et circuitus elevatus eorum) ad basin gerens. Annulus nul- 

 lus, sed a cellulis delabentibus nonnullis oris repraîsentatus. Exostomium parvum, pallido- 

 brunneolum, subhyalinum, dentés 16, per paria arcte connati, in sutura interdum irregulariter 

 hiantes, crassi, anguste dolabriformes, obtusiusculi, remote articulati, sed vix trabeculati, den- 

 sissime verruculosi et subbyalino-limbati; endostomium maxime rudimentarium et membranam 

 basilarem vix conspicuam et processus (in interstitiis parium dentalium) a duabus cellulis 

 verruculosis confiâtes solum ostendens. Columclla crassa et hyalina. Spori minuti, ferru- 

 ginei, verruculosi. Opcrculum ferrugineo-hUeum, nitidulum, brevissime conicum, rectum, ob- 

 tusum, medio apicis minutissime mamillatum et brunneolum. Cahjplra angusta et sat longa, 

 cucullata, straminea, nitidissima, apice brunneola, lajvis. 



Planta mascula femineis rarioribus intermixta, gracilior et minus ramosa, androecia 

 sat minuta in plerisque axillis gerens. Bracteœ androecii subrotundœ, latissime et breviter 

 apiculatœ, integerrimœ, énerves, coebleariformiter eoncavœ, 6 — 12 antheridia ovato-oblonga 

 et breviuscule stipitata et subœquilongas paraphyses copiosiores includentes. 



Hsec species pulcherrime distiuguitur caule haud paraphyllifero, dorso nervi lœvissimo, 

 exostomii dentibus latis, brevibus et inter se geminatim connatis, endostomio maxime rudi- 

 mentario; notiB quaj ei dignitatem subgeneris novi {Adelphodontis) tribuunt. 



Lesguereuxia saxicola (B. S.) L. M., quacum vix dubitanter L. insignis De N. e specimine 

 authentico synonyma est, toto coelo diversa his notis: planta duplo minor, prajsertim tamen 

 brevior, magis rigida, nitidula, dense paraphyllifera et foliata; folia longius et latius decur- 

 rentia, vix biplicata, ovata, breviter acuminata, margine jam a basi magis reflexo, superne 

 serrato, nervo multo crassiore et magis carinato, dorso praîsertim summo serrata, cellulis 



