1898-1902. No. 11.] BRYOPHYTA. 83 



155. Bryum gemmaceum Bryhn & Ryan sp. nov. 



Caespites densissimi, fusci, 4 mm. tantum alti. 



Surculus erectus, innovationes numerosas 0.5 — 1 mm. altas gemmi- 

 formes vinoso-tinctas emittens, tomento fusco ramosissimo papillose dense 

 tectus. 



Caulis rufescens, inferne subnudus. 



Folia caulina et comalia inferiora late ovalia, margiiie plana et limbo 

 nuUo cincta, apice obtusa, comalia superiora gemmseformiter densissime 

 congesta, baud decurrentia, 1 mm. longa et 0.5 mm. lata, ovata, breviter 

 acuminata, margine piano baud vel indistinctissime limbata. 



Costa folioriim nunqvam continua, in fobis cauiinis inqve comalibus 

 inferioribus tenuis, S8epe ad series cellularum elongatarum duas reducta, 

 longe infra apicem evanida; ilia foliorum comalium supriorum mediocri 

 ter valida, inferne rubra, ceterum luteo-virens, infra apicem evanescens 



Cellulae foliares basilares rectangulse, coloratse, parietibus rubris, 

 angulares numero pauco rotundato-qvadratae, conflatae, folii medii et su 

 perioris rhombese vel breviter hexagonse, marginales paullo longiores 

 plurimse mediocriter incrassatae, parietibus sinuosis. 



Inflorescentia synoica. Archegonia 5 — 7, 0.45 mm. longa ; antberidia 

 1 — 2, breviora, rubescentia; parapbyses baud numerosae, rufo-lutescentes, 

 longiores qvam archegonia. 



Seta crassiuscula, 7 mm. longa, flexuosa, fuscescens. 



Capsula pendula, operculata versus 2 mm. longa et 1 mm. crassa, 

 obovata-clavaeformis, subcano-lutea, subnitens; collum sporangio subaeqvi- 

 longum, siccitate contra illud parum constrictum et longitudinaliter pli- 

 catum, in setam defluens, ceiiulis epidermicis qvadratis vel breviter rec- 

 tangulis, parietibus illarum valde incrassatis et sinuosis, stomatibus paene 

 circularibus, 0.045 mm. latis; sporangium sub orificio baud angustatum, 

 ceiiulis epidermicis valde incrassatis, non regularibus, qvadratis et rec- 

 tangulis cum rotundatis mixtis, marginabbus in seriebus qvatuor trans- 

 verse rectangulis. 



Exostomii denies prope orificium affixi, fundo aurantio, 0.33 mm. 

 longi et basi 0.06 mm. lati, lutei, dimidio inferiore bneares, dein subito 

 angustati, anguste limbati, papilloso-punctati ; scutula rectangula inter- 

 dum qvadrata, suturis conspicuis, mediana angulata; lamellae 16, altae, 

 non conjunctae. 



Endostomium liberum, lutescens, punclulatum; membrana 0.2 mm. 

 alta, processus superne rimosi, inferne foraminibus ovalibus pertusi. 



Cilia nulla. 



