MurriLL: PoLypoRacEAE OF NortTH AMERICA 339 
figured under several genera since it was first described as a 
Boletus. Soon after being transferred to Polyporus, it was assigned 
to Daedalea because of its irregular pores, then to Polystictus 
because it seemed nearly allied to 2. perennis. Queélet, however, 
overlooked this relationship and classified it under Cladomeris 
with Polyporus frondosus, P. imberbis, etc., largely on account of 
its hyaline spores. The species may be easily confused in some 
of its forms with Polyporus hispidus, but its normal form is stipi- 
tate, while P. Azspidus is always dimidiate and the spores of the 
former are hyaline while those of the latter are of a deep golden 
hue. From the genus Co/tricia, apparently its nearest ally, it 
differs in having hyaline spores, a more spongy context, differently 
colored tubes and a very variable stipe. 
I take pleasure in dedicating this genus to my friend Lars 
Romell, the distinguished mycologist of Stockholm, Sweden. 
Romellia sistotremoides (Alb. & Schw.) 
Boletus sistotremoides Alb. & Schw. Conspec. Fung. 243. 1805. 
Polyporus Schweinitsii Fr. Syst. Myc. 1: 351. 1821. Icon. fv. 
IOS ..3.. 1870. 
Daedalea epigaeca Lenz, Schwam. 62. 1831. 
Polyporus tabulaeformis Berk. Lond. Jour. Bot. 4: 302. 1845. 
Polyporus Spectabilis Fr. Nov. Symb. 48. 1851. 
Polyporus hispidioides Peck, Rept. N. Y. State Mus. Nat. Hist. 
Se- 21... 1880: 
Polystictus Schweinitsii Karst. Rev. Myc. 3: 18. 1881. 
Cladomeris Schweinitsii Quél. Enchiridion, 169. 1886. 
The description of this fungus as given by the original authors 
is sufficiently clear and complete and the plant is so well known 
as to require little comment upon its appearance and structure. 
On account of its exceeding variability, well-known mycologists, 
such as Fries, Berkeley and Peck, have been led to rename it in 
Certain of its forms. P. tabulaeformis, for example, is an old plant 
of P. Schweinitet! from Augusta, Georgia, sent to Berkeley by 
Wray, while a similar specimen sent by Curtis from North Caro- 
lina to Fries received the name P. spectabilis, the type of which 
Still exists at Upsala. Fries was deceived by the firm, corky sub- 
Stance and very changed aspect of the plant in its older stages. 
