g Dansk Botanisk Arkiv, Bd. 2, Nr. 7. 



hooks. [The edge of the gills is sparingly set with obtuse, inflated 

 cystidia. Filaments on umbo formed of about 8 — 10 |u broad 

 cells, which are sometimes slightly fuscous (1914)]. 



Fig. specim.: Korint, on big heap of sawdust, gregarious, sub- 

 fasciculate; fig. B. specimens (from a very sunny place) with the 

 cuticle scorched and broken up into dark, fuscous, broad scales, 

 Oct. 1899. Also found near Gelsted, on heap of sawdust, Oct. 1914. 



4 a. P. pellitus (Pers.). 



Spores broadly ovate, 6—7x4 — 5 u, Cystidia on sides: sub- 

 fusoid, with hooks, on edge: inflated obtuse. 



Fig. specim.: Kirkeby, on stump of Fagus, Oct. 1909. Also 

 found in similar locality at Skjoldemose (1900) and Korsør (Sept. 

 1902). It is not clearly distinguished from pale forms of P. cervinus. 



4 b. P. pell. var. 



Spores subrotund-oval, l l j 2 x 5'/ 2 h l - Cystidia as in type. 



Fig. specim.: Fruens Bøge, on the ground under old beeches, 

 solitary, Aug. 1914. 



A slender form (cap 4 1 / 2 cm, stem about 7 cm), the white cap 

 everywhere sparingly clad with very minute, dark fibrils, which 

 on the umbo become denser and form small, fibrinous, erect 

 squamules. This variety forms a transition to P. Roberti. — 

 P. Roberti in the sense of Ricken appears to be this form. 



|3. DEPAUPERATÆ. 



5. P. gracilis Bres. (as a variety of pellilus). 



Spores oval-globose, G 1 /-, — 7 X 5V 2 — 6 V- Cystidia on edge (occa- 

 sionally also on sides of gills) inflated clubshaped or somewhat 

 fusoid, about 18 u broad. Surface of cap formed of cylindric or 

 somewhat inflated cells (about 90 x 16 u) which at last become 

 somewhat brownish. 



Fig. specim.: Aarslev, on old pollarded Populus canadensis, 

 Oct. 1916. 



The description given by Bresadola fits my plant very well. 

 But to judge from the cystidia it cannot be retained as a variety 

 of P. pellitus. — The other variety, punctillifer Quel, (mentioned 

 in Saccardo Syll. V 668) appears to be almost identical, except 

 for the uncommonly small spores. 



6 a. P. Roberti Fr. 



Spores ovate-globose, 6 x / 2 — 8 x 5 1 j 2 — 6 u. 



Fig. specimens: Fruens Bøge, solitarv on rotten stump of Fagus, 

 Oct/l899. 



