No. 18. V. d. Lek, Persoon's types of Polyporus [1913]. 3 
also a note of BResApora (1911) „== Polyporus hirsutus (Wurr) Fr.” 
2. Some specimens, sub N°. 10, 263—83% labelled by PERSOON: 
„Polyporus lutescens? (nondum adultus)’ and „Polyporus lutescens! 
junior. Aut P. versicolor var. limbo ferrugineo.” These are small 
and young specimens of Polystictus versicolor (Teste BRESADOLA). 
d. A specimen (sub N°. 910, 263255), to which BRESADOLA 
added the note: 
Boletus velutinus PLANER 1788. 
„ lutescens Pers. 1794. 
= „ __ pubescens Scum. 1805. 
— Polyporus velutinus Fr. 1821. 
= „ pubescens Fr. 1821. 
— „ lutescens Pers. 1828. 
Polystictus perennis. 
Good specimens besides those in covers are to be found in boxes 
83, 199 and 309. Also a specimen under the name „Boletus infun- 
dibulum’”’ sub N°. 910, 22804. This name is mentioned in the 
Syn. Fung. [addenda et corrigenda pag. XXX]: 
„ad Boletum perennem ut synonymum, quoad viua mecum a Rev. 
TRENTEPOHL communicata specimina pertinet Boletus Infundibultum 
Rorn. Catal. 1. p. 244.” 
Polystietus versicolor. 
There is a good deal of material of this species; in boxes No. 
348 and N°. 138 and on many sheets f.i. N°. 910, 263—S804, N°. 910, 
263—256 and others. 
FOMES. 
Fomes conchatus. 
In PrersoonN’s herbarium, especially in the boxes, we find a large 
number of forms, and these show us, that the great variability 
of this species was not clearly understood by him; consequently 
he distinguished a number of different species. Intermediate forms 
however are easily found, so that a larger series of specimens 
would show a more or less complete transition from one form to 
the other. 
We find in Persoon’s herbarium: 
1. „Polyporus (Boletus) conchatus Syn. Fung.” (PeRSOON’s writing); 
in sheet sub N° 910, 262—SSS. Typical specimen, shell-shaped, 
thin , margin acute, concave below, pores small, cinnamom ; above 
feebly concentrically sulcate, with indistinct zones of difterent 
shades of brown. 
