Lloyd Mycological Writings V4.pdf - MykoWeb

CONTEXT AND PORES WHITE OR PALE.
white, drying sordid, rather hard and "fissile." Surface white,
scrupose when fresh, no distinct crust, drying reddish brown, and
wrinkled. Pores medium, large, about 1 mm., with tubes 1 cm. long,
white w^hen fresh, drying reddish agglutinate with a waxy or resinous
appearance. Spores subglobose, 6-7 mic. in American species, 4-5
mic. in European.
This species has had a curious history. It is a European plant,
but it is impossible to trace it definitely in European literature; and
the name we use was applied to it by Berkeley from an American
specimen. The type is a thin section which can be recognized after
one learns the species. It was correctly interpreted by Murrill. In
Europe it is not recognized in any of the wrorks of Fries, Berkeley,
Persoon, Quelet, or Schroeter. Bresadola first referred it to Polyporus
rubiginosus (Fung. Kmet.), and in later years to Polyporus albus.
We are unable to reconcile it to either. Romell recently named it
Polyporus albo-sordescens. The name Berkeley applied, meaning
capable of being split in the direction of the grain, is not inapplicable.
In the United States Polyporus fissilis occurs only in our Southern
States, on deciduous wood. In Europe it is of a more northern range,
and Mr. Romell finds it about Stockholm. We have several collections
from Europe.
Compare albosordescens, albus, rubiginosus.
Fig. 662.
Polyporus undatus. Fig. 662, a rare pileate form.
320
Fig. 663.
Fig. 663, the usual resupinate form.