124 REVISION OF THE NORTH AMERICAN HYDNACEAE 
Climacodon Karsten, Rev. Мус. 3': 20. 1881. 
Sclerodon Karsten, Finlands Basidsv. 360. 1880. 
' Plants epixylous, sessile, ог stipitate, more or less dimidiate 
effused reflexed, or rarely wholly resupinate; substance usually 
fibrous, tough, or sometimes subfleshy ; teeth terete or flattened ; 
spores smooth, ovoid to oblong, white or hyaline, minute. 
Gray established the genus on Hydnum Daviesit Sow. = Н. 
ochraceum Pers. But his work receiving little or no recognition, 
the genus was never taken up. In 1879 Karsten established 
the genera Creolophus on H. corrugatum Fr. and Gloiodon on Н. 
strigosum Swartz. Later he established the monotypic genus 
Sclerodon on H. strigosum Swartz, making it thus a synonym of 
his own GZozodoz and actually quoting the latter as a synonym 
There seems to be no reason whatever for this change of name. 
Karsten's efforts thus to segregate these plants into distinct genera 
appear to have been rather unsatisfactory and although the genus 
as here treated includes some rather widely varying forms it does 
not seem to be possible to separate them on any lines of natural 
cleavage, while the spore characters appear to indicate a high 
degree of uniformity. 
Synopsis of the Species 
Plants usually sessile or resupinate (substipitate inno. 2), spores more than 2и wide 
an lon 
3p 10 
Substance of ee nt dry, fibrous, tough, when fresh; pileus less than 8 cm. wide. 
Plants densely gregarious, more or less confluent, whitish, grayish, or 
5. 
Pileus dimidiate, sessile, decurrent оп the “haem or resupinate, 
-scarcely pubescent. . ochraceum. 
Pileus more or less flabelliform, narrowed лі анін, rarely 
resupinate, 2452 strigose hairy 2. Mois. 
Plants not conflue 
ace of eed pubescent or smooth. 
Pileus mostly drab, 3 ст. or more wide. 3. 5. Morgani. 
Pileus isabelline to umber, usually less than 3 cm. wide. 
4. 5. reniforme. 
urface of pileus densely strigose. 5. S. strigosum. 
Substance of plant juicy or at least moist when fresh. 
Surface of pileus smooth or scabrous; plant small, less than 6 cm. wi 
x а Семей 
Surface of ies Ep or tomentose; plants usually large, more than 
IO cm. 
Suiten of ща gummy, subflexible when dry. 6. S. pulcherrimum. 
