MourRILL: POLyPORACEAE OF NorrH AMERICA 345 
exsiccati, among which the following will indicate the distribution 
of the species: Finland, Karsten; Sweden, Starbéck ; Saxony, 
Krieger ; Hungary, Linhart; Belgium, Westendorp & Wallays ; 
France, Fautrey; England, Massee, Plowright ; Canada, Macoun ; 
Maine, B/ake, Flarvey, Ricker, Macdougal ; Massachusetts, Fursten ; 
Washington, Macbride ; Wisconsin, Calkins ; Michigan, Jinus ; 
Minnesota, Hofway ; New York, Shear, Peck ; New Jersey, Ellis. 
3. Coltricia parvula (K1.) 
Polyporus parvulus K\, Linnaea, 8: 483. 1833. 
Polyporus connatus Schw. Trans. Am. Phil. Soc. AS 1Sds F834. 
Polystictus parvulus Fr. Nov. Symb. 70. 1851. 
Polyporus focicola B. & C. Jour. Linn, Soc. Bot. 10: 305. 1868. 
is species was described from plants in the Hooker her- 
barium collected by Dr. Richardson in America. Klotsch had 
hardly published his description before Schweinitz described the 
same plant under the name Polyporus connatus. When Fries es- 
tablished the genus Polystictus, this species was listed first, thus 
becoming its nomenclatorial type. Later it was renamed P. focicola 
by Berkeley and Curtis, the reason not being assigned. The plant 
occurs only in North America and is confined, so far as is known, 
to the states south of Massachusetts. As with C. perennis, it 
usually grows on earth mixed with ashes and charcoal from fires 
built in woods. 
There is no difficulty in distinguishing it from C. perennts ex- 
cept in middle ground occupied by both species, where they have a 
tendency to approach each other in varieties. There can be no 
doubt that the two species are intimately related in origin and the 
inference is that C parvula is an offspring of the cosmopolitan 
Species induced by conditions existing at one time in the more 
southern parts of North America. They are at present, however, 
So distinct that a plant collected in Georgia may with little hesita- 
tion be called C. parvula, while one from Canada may with equal 
certainty be labeled C. perennis. The following collections of C. 
Parvula are at hand: North Carolina, Curtis; South Carolina, 
Ravenel ; Georgia, Harper; Alabama, £ar/e ; Delaware, Com- 
mons ; Pennsylvania, Everhart, Jeffries & Haines. In every in- 
Stance the collection was made on soil where fires had been built. 
