474 



CLASS BASIDIOMYCETEAE 



4 



Fig. 153. Polyporales, Family Thelephoraceae. (A, B) Pellicularia isabeUina (Fr. ) 

 Rogers {Tomentelln flava Bref.) (A) Loose weft of mycelium bearing below scattered 

 basidia and above conidiophores. (B) Basidium and spores. (C-E) Aleurodiscus 

 amorphus (Pers.) Rabenh. (C) Habit sketch. (D) Section of hymenium with basidia 

 and "paraphyses." (E) Basidiospore. (A, after Brefeld: Untersuchungen aus dem 

 Gesammtgebiete der Mykologie, Heft 8, pp. 1-305. B, courtesy, Rogers: Univ. Iowa 

 Studies in Natural History, 17(l):l-43. C-E, after Killermann, in Engler and Prantl: 

 Die Natiirlichen Pflanzenfamilien, Zweite Auflago, vol. 6, pp. 124-288, Leipzig, W. 

 Engelmann.) 



