126 THE CHICAGO ACADEMY OF SCIENCES 



Solenia ochracea Hoffm. 



Scattered, clavate-cylindric, tomentose, ochraceous, white 

 within. Spores cylindric-oblong, 7 x 4 /A. 



On dead logs, River Forest. July. -Harper. It is considered 

 by Massee to be only a variety of S. anomala. 



Solenia anomala Fr. 



Usually crowded and forming effused patches, pyriform, 

 margin of hymenrum incurved, externally pilose, varying from 

 dingy ochraceous to ferruginous. Spores cylindric-oblong, 7 x 4 /A. 



Var. orbicularis Pk. Receptacles collected in orbicular groups 

 and seated on a conspicuous, dense, persistent, tomentose, tawny 

 subiculum. 



The variety found on rotten wood in moist places, Millers. 

 HYDNUM. 



Plants pileate, central-stemmed or lateral, or resupinate and 

 spreading, fleshy or corky; spines awl-shaped, usually regular, 

 distinct at the base. Growing on the ground or on wood. 



Entire, simple, with a central stem; terrestrial 1 



Branched or tuberculiform, epixylous 4 



Resupinate, or effused-reflexed, epixylous 5 



1. Pileus whitish or yellowish 2 



1. Pileus orange, ferruginous or blackish 3 



2. Plant fragile H. repandum. 



2. Plant coriaceous-tough H. adustum. 



3. Pileus and stem orange H. aurantiacum. 



3. Pileus and stem ferruginous H. zonatum. 



3. Pileus and stem black H. nigrum. 



4. Pure white, much branched, spines 4 to 8 mm. 



long H. coralloides. 



4. Whitish, then brownish, tuberculiform, un- 



branched , . . . H. erinaceum. 



4. Whitish, tuberculiform with short branches, 



spines 12 to 25 mm. long H. caput-Ursi. 



4. Pilei cervine, scalariform, connate behind . . . H. septentrionale. 



5. Plant effused-reflexed, ochraceous H. ochraceum. 



5. Plant resupinate : 6 



6. Subiculum and spines white.. H. pallidum. 



6. Subiculum and spines alutaceous H. Nyssae. 



6. Subiculum and spines orange-yellow H . chryscomum. 



6. Subiculum and spines umber H. crinale. 



Hydnum repandum L. 



Pileus fleshy, fragile, somewhat repand, rather smooth, 

 variable in color, whitish, yellow or flesh-color. 



Stem irregularly shaped, pallid; spines 8 mm. long, c'on- 

 colorous with the stem. 



Ground in woods, Glen Ellyn. August, 1902. The pileus 

 cracks irregularly in drying. Taste at first mild, then slightly 

 peppery. Spines terete, pallid, becoming darker in drying, sharp- 



