26 



Dansk Botanisk Arkiv, Bd. 3. Nr. 1. 



5. Acrochætium gracile nov. spec. 

 Thailus cæspitosus usque ad 1 mm. altus et ultra. 

 Pars basalis e filis repentibus, epiphyticis, plus minus lateraliter 

 confluentibus composita. Fila erecta, simplicia aut paucis ramulis 



Fig. 19. Acrochætium gracile nov. spec. 



a and b, erect filaments with sporangia, c, base of a plant. 



(a and b, about 150: 1; c, 250: 1). 



in superiori parte instructa, ramulos sporangiferos, 1 — 2 raro 

 plures cellulas continentes gerentia, ad apicem versus leniter 

 attenuata ex cellulis cylindricis in inferiori parte filorum 5,5// 



