556 POUL LARSEN 
1 mm thick, white, smooth, clothed with projecting hairs below. — Gills 
at first pale, then black, narrow, distant, free. — Spores dark purplish- 
brown, flattened, heartshaped on a side view, c. 9 u in diameter, viewed 
from the edge ellipsoidal and 9X6 u. 
603. C. ephemeroides (Bulliard) Fries, Epicr., p. 250. 
Hofsfjall [O. D.|. — On horsedung. 
The present writer has not observed this species in Iceland, but it 
is given by E. Rostrup in Isl. Svampe 1903, p. 296. 
604. C. fimetarius (Linné) Fries, Epier., p. 245. 
Agaricus fimetarius Linne, Flora Suecica, No. 1213. 
Akureyri [P. L.]. — On highly manured littoral field. 
Pileus at first clavate, then broadly conical with raised sulcate 
margin, 2—5 cm high and broad, grey, brownish in centre, covered by 
a floccose-squamulose layer. — Stipe elongate conical with a peronate- 
floccose base, white, hollow, very fragile. — Gills at first grey, then 
black, free, soon deliquescent as well as the whole cap. — Spores 
blackish brown, ellipsoidal, 12—14.5X 7—8 u. 
605. C. atramentarius (Bulliard) Fries, Epicr., p. 243. 
Agaricus atramentarius Bulliard, L c., t. 164. 
Mäfahliö (Helgi Jönsson). 
This species is listed among Iceland’s fungi by E. Rostrup, Isl. 
Svampe 1903, p. 296. 
Boletaceae. 
Suillus Micheli. 
606. S. castaneus (Bulliard) Karsten. 
Boletus castaneus Bulliard, 1. c., t. 328. 
Grjötnes [C. H. O.], det. E. Rostrup. — On a heath. 
Boletus Dillenius. 
607. B. scaber Bulliard, 1. c., t. 489, f. 1. 
Common in birch copses throughout Iceland [P. L.). 
608. B. laevis Fries, Epicr., p. 425. 
Note. E. Fries states in the Epicrisis that he received this Boletus 
from Count Raben, who had collected it in Iceland. The species has been 
diagnosed on the basis of material preserved in alcohol. JB. laevis has 
never been found again either in Iceland or elsewhere, and since the 
diagnosis of Fries renders it quite permissible to regard B. laevis as an 
accidental smoothly stipitate variant of B. scaber, there seems to be no 
reason to maintain B. laevis as a species. 
