L. ROMELL, HYMENOMYCETES OL LAPPLAND. 13 
similar cystidia, BRESADOLA considers the one as a variety of 
the other. That the two plants are really distinct is, however, 
indicated already by their constantly different colors, and is 
furthermore confirmed by the difference in their spores, those 
of Pol. rixosus being allantoid and smaller (2 !/,—4 x !/,—1 v). 
— FRIES” Icon. t. 189. f. 1 (»Polyporus incarnatus») represents 
probably Polyp. rixosus Karst., though the margin is shown 
too radiate. The original drawing has the name »Polyporus 
helvolus n. sp.» (written in ink). Later the name Polyporus 
incarnatus is added (in pencil). Neither is written by ELIAS 
FRIES. 
P. ferro-aurantius n. sp. — Fig. 1. 
Anodermeus, sessilis, subearnosus vel carnoso-lentus (in 
statu sicco rigido-fragilis), subtriqueter, intus albus, supra 
pallide ferrugineo-aurantius vel rubiginoso-albidus, velutinus 
vel sub lente fere villoso-strigosulus. Pori in statu sicco ochro- 
leuci, 3—5 pr mm., 1—2 mm. longi, nudi vel ad orem brevissime 
fimbriati. Sporae hyalinae, ellipsoideae, grosse l-guttatz, 
4—41/x3 p».  Basidia clavata, 15x6 p. Hyphae 2—3 u 
latae, fibulato-septatae. 
On a fallen trunk of Betula at Bergfors (only two small 
specimens, about 1—1 !/, cm. in radial and 2—2 '/, cm. in tan- 
gential direction and about 1 cm. thick at the base). 
This beautiful species is quite distinct from P. fibrillosus 
Karst. and P. aurantiacus Pack but might be allied to Pol. 
Kmetii Bres. — As far as can be judged from the description, 
it seems to be not identical, however. 
P. fomentarius. — Fig. 22 (spores). 
On rotten trunks of Betula at Pälnoviken, Jebrenjokk, 
Nuolja, Stordalen, Kalixfors. 
Spores hyaline, obtusely fusiform, 10—22x3—7 (gene- 
rally 18—20 x 6) y. 
P. fumosus. 
On rotten trunks of Salix at Nuolja. — Spores ellipsoidal, 
5—7 X3 !/,—4 v., thus larger than those of Pol. adustus. 
P. hymenocystis, — Fig. 9. 
On rotten wood of Betula at Palnoviken and Kalixfors. 
