* 
12 ARKIV FÖR BOTANIK. BAND Il. w:o 3. 
P. brumalis. 
At Björkliden, Nuolja, Pàlnoviken, Bergfors and Kalixfors. 
Pores nearly hexagonal, but elongated in radial direction 
1—3 per mm., in tangential direction 2!/,——4 per mm. Spores 
allantoid, 2-guttate, 5—6 x 2 y. 
P. dichrous. — Fig. 13. 
On fallen trunks of Betula at Abisko, Bergfors and Kalix- 
fors. 
Spores allantoid, 3—4 !/, 5 !/,—1 t. 
Pol. expallescens K. is in my opinion not distinct from the 
resupinate form of this species. 
P. elegans. 
On fallen trunks of Salix at Björkliden, Nuolja and Berg- 
fors. 
Spores oblong, 7—9 x2!/,—3 w, often 1-2-3-guttate. 
P. euporus. — Fig. 20 (spores). 
On dead trunks of Salix at Nuolja. 
Spores ellipsoidal or ovate, 1-2-guttate, 4—41/, (——5) X 
2:/,—3(—3'/,) w. Cystidia hyaline, clavate, 15—105 x 6—15 
», upper part incrustate and verruculose. Hyphae 2—3 u. 
broad. 
This species is described by KARSTEN, and good specimens 
of it are distributed in his Fungi Fenn. Exs. No. 618. Of the 
three collections so named in KARsTEn’s herbarium two belong 
here, the third not. On the other hand his Chaetoporus tenuis 
seems to be the same species, and a note on the envelope shows 
that KARSTEN himself suspected the identity. QUELET refers 
this plant to Pol. nitidus PERS. In PERsoon’s herbarium two 
collections of it occur (viz. No. 910, 277—270 and No. 910, 263— 
915), one of which is named »Pol. nitidus? Pol. molluscus var.? » 
and the other »Pol. molluscus? », showing that PERSOON himself 
only with hesitation considered this plant to be identical with 
his Pol. nitidus. In Fries” herbarium three collections are re- 
ferred to Pol. nitidus but none of them belong to Pol. euporus 
Karst. I therefore think it best to use KARsTEN'S name, which 
is accepted by FRIES. 
Fries confounded this plant with Pol. rivosus K., as his 
Pol. Blyttii comprises both. Lured by the fact that both have 
