1898-1902. No. 11.] BRYOPHYTA. 103 



North Devon: Havhestberget (forma elongata) og Borgoen ; North 

 Lincoln: Framfjord (synoic, c. fr.); Kong Oscars Land: Havne- 

 fjord, Mosknsfjord (c. fr.), Gaasefjord (c. fr.), Excrementbugten og Landsend ; 

 Ellesmere Land: Framshavn (c, fr.), Cape Viole og Beitstadfjorden 

 samt mellem Ft. Juliane og Mt. Kola-Paulsen under 79° nordlig Bredde. 



Arten er tidligere kjendt fra de fleste undersogte arktiske Egne, 

 ogsaa fra Spitzbergen. 



183. Bryum densum Bryhn & Ryan sp. nov. 



Gsespites compacti, densissimi, superficie plani, circiter 1 cm. aiti, 

 ad medium terra liniosa sepulti, intus flavo-fuscij apice fusco-virentes. 



Surculus ramosissimus, ex parte caulis et inferiore et superiore fla- 

 gella numerosa densissima, filiformia et densifoliata emittens, tomento 

 intricato luteo-fusco corpusculis articulatis oblongo-clavseformibus instructo 

 vestitus. 



Caulis 0.16 mm. crassus, rufescens, sectione subrotundus, e cellulis 

 constructus leptodermibus, qvoad magnitudinem variis, periphericis in 

 serie una minoribus magisqve incrassatis, fascicule centrali distincto nuUo. 



Folia caulina parva, vix decurrentia, ovalia apice obtuso, margine 

 piano elimbata, costa supra medium dissoluta. 



Folia apicalia majora, in comam paucifoliatam congesta, oblonga, in 

 apicem latiusculum obtusum angustata, externa paullo decurrentia, 1 mm. 

 longa et 0.5 mm. lata, margine piano elimbata, interna 1.4 mm. longa 

 et 0.62 mm. lata, margine anguste reflexa et seriebus cellularum 1—2 

 indistincte limbata. 



Rete cellulare ad basin rubrum, ceterum lutescens. Cellulse basila- 

 res elongato-rectangulae vel elongato-hexagonse, 0.06—0.1 mm. longse et 

 0.012—0.015 mm. latse, ad angulos vix dilatatos ovales et hexagonse, 

 folii medii apicalesqve irregulares, breviter rectangulse, rhombeae et hexa- 

 gons, 0.036—0.072 mm. longae et 0.012—0.015 mm. latae, parietibus vix 

 incrassatis. 



Costa sub apice desinens. 



Flagella cum foliis 0.35—0.38 mm. crassa. 



Caulis flagellorum 0.11—0.13 mm. crassus, pellucidus, e celluHs sub- 

 qvadratis constructus. 



Folia flagellorum et humida et sicca dense imbricata, concava, late 

 ovalia vel obovata, apice rotundato, 0.43 mm. longa et 0.28 mm. lata, 

 margine piano elimbata, costa tenui sub apice dissoluta, cellulis basilari- 

 bus rubescentibus qvadratis vel breviter rectangulis, cseteris rhombeis, 

 guttulas oleosas continentibus, 



