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VoL. 30 ‘ No. 8 
BULLE: Fim 
OF THE 
TORREY BOTANICAL CLUB 
AUGUST, 1903 
The ss bape of North America.—V. The Genera Cryptoporus, 
Piptoporus, Scutiger and Porodiscus 
By WILLIAM ALPHONSO MURRILL 
The most important groups of the genus Fomes, as this term 
is generally used, have been treated in the preceding papers of this 
series. The plants heretofore considered are, for the most part, 
' perennial, with large stratified sporophores which grow conspicu- 
ously upon the dead or dying wood infested by their very active 
mycelium. The present paper deals chiefly with species found 
under the genus Polyporus in Saccardo. These plants are annual 
and their fruit-bodies are less conspicuous than those of the former 
group, while their mycelium is usually comparatively limited in 
extent. Most of the species here discussed are terrestrial and 
somewhat fleshy, being allied to the Boletaceae. These terres- 
trial species are exceedingly rare and beautiful in North America, 
and present an interesting problem in distribution. The genus 
Porodiscus introduces the wood-loving forms of the genus Poly- 
porus, which will form the subject of another article. 
Cryproporus Shear, Bull. Torrey Club, 29: 450. 1902 
The name Cryptoporus was first used by Peck (Bull. Torrey 
Club, '7: 104. 1880) to designate a new section of the Placodermei 
made necessary by the discovery of a species of Polyporus having a 
volva. His description of the section is as follows: 
“ Pileus at first subcarnose, becoming harder or corky, sessile or 
stipitate, the margins greatly prolonged beyond and beneath the 
[The preceding number of the BULLETIN, Vol. 30, No. 7, for July, 1903 (30: 369- 
422), was issued 10 Jl 1903. ] 195 
