422 MurriLL: PorypoRacEAE OF NORTH AMERICA 
above, woody below, tubes thin-walled, mouths polygonal ; spores 
subglobose, smooth, hyaline. 
The type of this genus is Boletus distortus Schw. (Syn. Fung. 
Car.71. 1818), a very variable species found about old stumps in 
various localities in the Eastern United States. The name assigned 
to the genus refers to the usual aborted form of the fruit body, in 
which the tubes with their abundant contents appear prematurely 
before the development of the pileus is complete. 
Abortiporus distortus (Schw.). 
Boletus distortus Schw. Syn. Fung. Car. 71. 1818. 
Polyporus abortivus Peck, Bot. Gaz. 6: 274. 1881. 
The ordinary form of the fruiting body of this species has the 
appearance of being badly aborted in its development, only a few 
of the pilei reaching their full size. In its arrested form the pileus 
is a mass of pores filled with spores. The species has been badly 
confused with P. rufescens of Europe, but a study of that species 
in the field easily shows a very marked difference. A small speci- 
men of our plant is to be found in the Paris herbarium under the 
name of Polyporus pulvillus Mont., but this name was never pub- 
lished for it so far as I know. The specimen is from South 
Carolina. 
This species occurs about stumps, roots and other dead wood 
of deciduous trees, such as the oak, maple, Az/anthus, etc. Its 
distribution is quite general throughout the eastern part of North 
America and it has been found as far west as Wisconsin and Texas. 
Exsiccatae: Canada, Dearness; Connecticut, Earle; Dela- 
ware, Commons ; New Jersey, Fillis; Pennsylvania, Kav, Gentry, 
Herbst; Ohio, Lloyd, Morgan, Dawson; Missouri, Demetrios 
Wisconsin, Miss Pattérson ; Alabama, Earle & Baker ; Louisiana, 
Langlois ; Texas, Gentry. 
Cyclomycetella gen. nov. 
Hymenophore annual, tough, epixylous, sessile, anoderm, 200- 
ate ; context thin, fibrous, brown, tubes short, thin-walled, mouths 
polygonal, becoming concentrically elongated in some species by 
the splitting of the radial walls; spores ellipsoidal, smooth, 
ferruginous. 
