254 S. O. Lindberg. 



69. Stereodon (Drepanium) pallescens (Hedw.). 



Leskea pallescens Hedw. Sp. musc. p. 219, tab. 55, figg. 1 — 6 (1801). 



Hypnum reptile Micnx. Fl. bor.-amer. II, p. 315 (1803). 



Hypnum pallescens P.-B. Prodr. p. 67 (1805). 



Hypnum pelUnochroon Lobakz. in Haid. Naturw. Abb. I, p. 51, u. 2 (1847). 



Var. protuberans (Beid.). 

 Hypnum Stereodon protuberans Beid. Bryol. univ. II, p. 612, n. 41 (1827). 

 Stereodon protuberans Brid. op. cit. p. 824. 

 Hypnum pallescens B. S. Bryol. eur. fasc. 57 — 61, Monogr. p. 18, tab. 7 (1854). 



Hab. in promontorio Lamoricière, fertile, medio Julii 1860, Schmidt. 



Specimina archetypa Leskeœ pallescentis, m provincia Veimland Sueciue (an ab ill. Waii- 

 LENBEKG?) coUecta et Hedwigio ab 111. Sw.a.rtz missa, sine ullo vestigio dubii ad Hypnum 

 reptile Michx. ex autopsia nostia pertinent. Cœspitulum Hypni protuberantis in herbario ip- 

 sius Bkidelii (quod iuspeximus), ineriptionem gerens: „Hypntan Stereodon protuberans. II. 

 St. cupressif. var. protuberans. H. cupressif. var. foliis vix secundis, operculi rostro albo. 

 In saltu thuringico, 1822'', re vera perfecta est idem museus ac Hypnum pallescens B. S. 

 1. cl Sed quod ad hane s. d. speciem attinet, nulle modo, nobis judicantibus, e 5/«'eorfow/e 

 pallescenti (Hedw.) spécifiée diversa esse potest, quum omnes notas divellentes valde vari- 

 abiles sint. Bracteaj perichsetiales ejus haud uninerves, ut dicuntur, sed binerves, licet hi 

 nervi bini inferne plus minusve connati interdum inveniantur. Lex naturœ est, in formis 

 muscorum, quarum folia unicum nervum ostendunt, bracteas quoque uninerves (vel énerves) 

 et in speciebus, quarum folia geminato-nervata sunt, bracteas quoque binerves (vel énerves) esse. 



70. Stereodon (Drepanium) plicatulus n. sp. Lindb. 



Dioiciis, tenellus, prostratus, planissimus, elegantissime regulariter piu- 

 natus, parce paraphyllifer; foliis maxime falcato-secundis, caulinis distincte 

 auriciüatis , late triangulari-ovatis , sensim subfiliformi-acutissimis, margine 

 piano, cellulis angularibus nuUis; seta brevi; theca, prœsertim sicca et eva- 

 cuata, plicata, vix curvata, horizontali, ovali, sub ore haud constricta, collo 

 brevi; operculo Immiliter seiuigloboso-conico, brevissime, sed acute apiculato. 



Hab. ad truncos arborum putrides prope Dui, fertile, Älaji 1861^ Glehn. 

 — In Amuria valde dispersa videtur. 



Ccespites sat extensos, densos, tenues et pianos, luteos et nitidos, efformans. Planta 

 5 — 8 cm. longa et 7 — 10 mm. lata, liumifusa, haud radicans, planissima et elegantissima. 

 Caulis pulcherrime et dense pinnatus. apice sat longe excurrente, cum foliis 1 mm. latus, ra- 

 mis plus minusve densis, patenti-divaricatis, strictis, ad apicem caulis decrescentibus, parce 

 paraphyllifer, parapliyllis minutis et multiformibus. Folia caulina densissima, maxime falcato- 

 secunda, ad basin, breviter et angustissime decurrentem, distincte auriculata, late triangulari- 

 ovata, sensim subfiliformi-acutissiina, canaliculato-concava, eplicata, margine ubique piano et 

 remote indistincte serrulato, eodem apicis subintegro, nervis gemellis, brevissimis, ina?quilongis; 

 cellulce pauUo incrassataj et tevissimse, augulares nullaj vel maxime inconspicuse, minutse 



