8 Dansk Botanisk Arkiv, Bd. 2, Nr. 11. 



Fig. specimens; Erholm, moist ground in wood of Fagus, 

 amongst dead sticks and twigs of Picea, Sept 1913. (Also at 

 Hjallese, moist copsewood, on the ground, Sept. and Oct. 1915). 



Pileo 1,5—1,8 cm, convexo-campanulato, hijgrophano, exstrio, 

 ochraceo-ferrugineo (sicco : ochraceo-lutescente, rugoso). Stipite elato, 

 tenui (6.5 cm X 2 mm), subtiliter striato, lutescente, e basi fusces- 

 cente, intus ferrugineo, glabro (primitus leuiter albo-plumuloso). 

 Annulo angusto, piano, læuiusculo, membranaceo. Lamellis latis, 

 primitus pallide ochraceis, dein ferrugineis, subdistantibus (subliberis)- 

 Sporce el cystidia ut supr. 



It is not improbable that this species is identical with P. togu- 

 laris (Bull.) sensu Ricken (loc. cit. pag. 199) which again he con- 

 siders almost like Galera oualis Fr. ; but neither of the Friesian 

 descriptions appear to me to confirm this opinion. From Galera 

 tener (with some forms of which it has a habitual likeness) it 

 can easily be distinguished, not only by the annulate stem but 

 also by the totally different cystidia. 



B. TRUNCIGENÆ 



a. CARNOSÆ. 



8. P. destruens Brond. 



Spores 7 : / 2 — 8V2 x 5 ju, oval, sub micr. pale brown. Basidia 4- 

 spored. Cystidia hairshaped, obtuse, about 5 (a broad. 



Fig. specimens: Flødstrup, on stump and dead trunk of Popu- 

 lus canadensis, Sept. 1899. Not uncommon, always on Poplar. 

 The fruitbodies always spring from the central part (the pith- 

 region) of the stump, while in most other xylophilous fungi they 

 are chiefly to be found in the peripherial region. — Bresadola 

 (loc. cit.) and others consider P. heteroclita Fr. identic. And as 

 Fries has not seen P. destruens, this is not unlikely. However 

 I have never met P. destruens on Betula, on which tree P. he- 

 teroclita is said to grow profusely in Northern Europe. 



9. P. radicosa (Bull.) 



Spores 7V2 — 9^2 x 5 — b l j. 2 u, ovate-ellipsoid, very minutely aspe- 

 rulate. Basidia 4-spored. Cystidia hairshaped-clubshaped, up 

 to 40 u long and 8 \i broad (in some cases broader, up to 12 a). 

 Fig. specimens: Ravnholt, in wood of Fagus and Quercus, Oct. 

 1897. — Not uncommon, but generally solitary. 



The cap, which Fries describes as »laevi, glabro«, is often 

 more or less squamose-fibrillose towards the edge (from .velum). 

 The spores are very much like those of most Hebelomas (not 

 coarsely warty as shown in Ricken's figure (loc. cit. tab. 33). 



A form, P. radicosa minor (not figured) was found by me 

 in wood of Betula (Trolleborg 1897). The cap was only 3^2 

 cm broad, the stem almost rootless. It grew in numbers on the 

 ground. 



