KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 28. NIO 2. 



37 



vel vix sub ore constricta; peristomium duplex, brunnescens; dentes exostomii 16, elongate 

 lanceolati, humiditate conniventes, siccitate erecti, apicibus inflexis, 0,42 mm. alti et 0,o4« 

 mm. lati, nodulosi, lamellosi, scaberuli, linea media indistincta, subpellucida notati, raris- 

 sime inferne parce rotundate perforati; dentes endostomii subulati, dentibus exostomii 

 ajqnilongi, 0,oi6 mm. lati, subnodulosi, lamellosi, linea media indistincta notati, scaberuli, 

 membrana basilari brevissima; sporce virides, 0,oi9 — 0,023 mm. niagme; plura non vidimus. 



Habitat in Camerunia in radicibus arborum, ubi ad Ndian emporium c. fr. m. Martio a. 

 1892 legi. 



Habit resembling that of N. truncata (Palis.), which is very common in the Cameroons- 

 territory and very likely in the whole of West-Africa. Is is, however, very distinct and readily 

 distinguished, being more robust and dnsky, with comparatively few capsules, the N. truncata on 

 the contrary usually having numerous such. The capsule is much darker, very shortly pedicellate 

 or quite unpedicellate, the peristome much longer and darker and only little papillous; the peri- 

 chsetial leaves are much wider and not denticulate in their upper parts etc. 



32 . 18 .. 142 . . 142 

 Fig. a folium — ; b bractese perichsetii — ; c cellulae folii basales — — ; d cellulse folii apicales . 



18 18 ... 18 



Pl. I fig. 2. a perichaetium cura fructu — ; b capsula humiditate — ; c pars capsuke supenor siccitate — ; 



.. 100 .. , 100 „ . . .. . 100 

 a pars peristormi ; e dens exostomii a latere visus ; / dens endostomii a laterc visus . 



Pl. III. fig. 2 planta magn. nat. 



Neckera hookeriacea C. Muller n. sp. in litt. 



Autoica, dense casspitosa, sat mollis, decumbens, per intervalla temporum fluitans, 

 usque ad 23 cm. longa, sordido-viridis, extremum lutescens; caulis repens, dense ramosus; 

 rami primarii basim versus aetate defoliati, complanati, sat graciles, cum 

 foliis usque ad 2 mm. lati, remote irregulariterquc tripinnati, ramulis 

 basin ramorum versus longis, pinnatis vel bipinnatis, apicem ramo- 

 rum versus brevibus, patentibus, obtusis, baud attenuatis et numquam 

 flagelliformibus, complanatis; folia ramea et ramulina patentia, disticha, 

 imbricata, sicca plus minusve, plerumque subsecunde curvata, humida 

 stricta, e basi impressa et angusta in laminam oblongo-liugulatam pro- 

 dueta, subasymmetrica, apice rotundata, plana, marginibus uno latere /) 

 inflexis, ceterum planis, superne minutissime serrulatis vel denticulatis, 

 nervö valido, pallido, rarissime suinmo bifurcato, infra apicem evanido; 

 ceilulis parietibus sat incrassatis, basalibus elongatis, marginem secus progredientibus, 

 ceteris rotundate rhombeis; plura non vidimus. 



Habitat in Camerunia, ubi prope Barrikam pagum in saxis rupibusque ad flumen Jongalove 

 sitis m. Februario a. 1891 legi. 



