28 



P. DUSEN, MOSSES FROM TIIF WEST COAST OF AFRICA. 



cylindrica, aureo-brunnea, setate badia, exannulata, sicca sub orc constricta, subtuberculata, 

 deoperculata 1,5 mm. longa et 0,58 mm. crassa; peristomium duplex, flavum; dentes exo- 

 stomii humidi fere stricti, conniventes, sicci reflexi, superne arcuate inflexi et conniventes, 

 laneeolate subulati, lamellosi, linea media notati et interdum superne perforati, 0,477 mm. 

 alti et 0,05 mm. lati; dentes endostomii angustissimi, lineares, ad lineam mediam anguste 

 perforati, 0,40 mm. alti et 0,oi9 mm. lati; eetera ignota. 



Habitat in Camerunia in ramulis arborum, ubi ad Bibundi emporium m. Julio a. 1892 c. 

 fr. legi. 



This very splendid speeies is the Largest of its genus, which I found in the Cameroons. 

 it forms very large, expanded, pcndulous tufts at the ends of the branches of trees and is very 

 common by the rivers and creeks and in the lower parts of the deep excavated river-channels. 

 It seems to like the neighbourhood of the sea, as I never found it very far inland nor at a greater 

 height above the sea. 



22 . . 22 . .. 18 



Fig. a folia ramea — ; b folia raraulina — ; c bracteae perichaetii — . 



18 18 6 2 



Pl. II. lig. 19. a perichaetiura cura fructu — -; b capsula humida — ; c pars peristomii — . 



Pl. IV. lig. 3 planta magn. nat. 



Pilotrichella communis C. Muller n. 



sp. in 



litt. 



Dioica; caulis repens, densiuscule ramosus; rami penduli, usque ad 20 cm. loniii, 

 fusco-virides, apicem versus pallide virides, nitidiusculi, stricti vel vage curvati, rigidi- 

 usculi, reinote irregulariterque pinnati, ramulis usque ad 2 em. longis, strictis vel plus 



minusve arcuatis, basin ramorum versus patentes, attenuatis, acuminatis, rarissime in 11a- 

 gelliini productis, medium et apicem ramorum versus brevioribus, patentissimis, vix at- 

 tenuatis, obtusis, plerumque simplicibus vel perparce ramulosis; folia ramea suberecta vel 

 patentia, densa, imbricata, semiamplexicaulia, alis rotundatis, parvis, e basi vix dilatata 



