40 



V. DUSEN, MOSSES FROM THE WEST COAST OF AFRICA. 



basi 0,025 mm. crasso, infra apicem evanido; cellulär dorso subpapillosae, secus parietes 

 chlorophyllosae, basales rectangulse, median» subelongate irregulariter hexagonae vel angu- 

 latae, apicales paullum breviores, subquadratae vel irregulariter angulatse; cetera ignota. 



Habitat in Camerunia in rupibus littoreis, ubi ad promontorram Dibundsche m. Noverabri 

 a. 1891 et ad Mokundange pagum m. Februario a. 1892 legi. 



Of tbe same size and habit as S. tenerum, but difiering in its more elongate, sometimes 

 shortly apiculate and always erose leaves. 



Not uncommon on basaltic rocks by tbe sea-sliore, very often associated witb Anoectangium 

 basalticum. 



42 200 200 

 Fig. a, foliura — ; b, cellulse apicales ; c, celliilse basales . 



Pl. 00, fig. 49, planta magn. nat. 



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