The Polyporaceae of North America—IX, Inonotus, Sesia and 
monotypic genera 
WILLIAM A. MurRRILL 
Continuing the work begun in article VIII of this series upon 
colored sessile forms, an attempt is here made to treat in their 
Proper relations plants with brown context and spores, constituting 
the genus /nonotus, and plants with brown context, hyaline spores 
' and daedaleoid or lamelloid tubes, constituting the genus Sesza. 
A few genera are also added that contain only a single species each. 
Inonotus Karst. Medd. Soc. Faun. et FI. 
Fenn, 6:90. 1870 
Snoderma Karst. Medd. Soc, Faun. et Fl. Fenn. Si 99. 1879. 
fnodermus Quél. Ench. 173. 1886. 
This genus was based upon four species, /. cuticudaris (Bull.), 
L. hispidus (Bull.), Z unicolor (Schw.) and £. hvpococctnus (Berk.). 
he two last can hardly be considered congeners of the first. The 
type species is /. cuticularis, not found in America. Karsten in 
later publications included also /. fibrillosus, 1. vulpinus, [. tri- 
queter, I. radiatus and J. nidulans in the genus, although some 
of them have hyaline spores. These he divided into two groups, 
One in which the pileus is spongy-fleshy and anoderm and the 
Other containing species with a dry, thin, fibrous cuticle. To the 
first group, such species as /. cuticularis and Lf. hispidus belonged, 
while 7. radiatus and J. fibrillosus were in the second group. 
This second group at first constituted the genus /noderma 
of Karsten, but the name is untenable, because preoccupied by 
Inoderma of S. ¥. Gray for a genus of lichens. Quelet’s genus 
Lnodermus was not only preoccupied so far as the name was con- 
cerned, but was founded upon /. /ispidus (Bull.), one of the orig- 
inal typical species of Znonotus Karst. The species here included 
in the genus Jzonotus are brown, sessile, usually anoderm, with 
fibrous context and brown-tinted spores. There is considerable 
Variation in spore coloration, the spores of some species being 
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