38 THE AGARICACEAE OF MICHIGAN 



7. Cantherellus tubaeformis Fr. (Edible) 



Syst. Myc, 1821. 



Illustrations : Michael, Fuhrer f . Pilzfreunde, Vol. II, No. 41. 

 (?) Cooke, 111., PL 1108. 



PILEUS 2-5 cm. broad, convex and obtuse, at length depressed 

 and margin irregular and recurved, sometimes subinfundibuliform, 

 not perforated in center, brownish-yellow to yellowish ochraceus, 

 silky -tomentulose, even, scarcely fading. FLESH thin at least to- 

 ward margin, whitish-ochraceus. GILLS arcuate-decurrent, mod- 

 erately thick, narrow and ridge-form, dichotomously forked, inter- 

 venose, rather distant, not prninose, flesh-gray to yellowish- 

 ochraceus, often slightly deeper in color than pileus and stem. 

 STEM 3-6 cm. long, 3-G mm. thick (sometimes thicker), fulvous- 

 yellow to ochraceous, concolor within, terete or canaliculate, 

 sometimes compressed, subequal, solid or stuffed at first, sometimes 

 at length hollow, glabrous, often curved, white at the very base. 

 SPORES broadly elliptical, 7-9.5x5-6 micr. punctate-granular, pale 

 creamy-white in mass. BASIDIA 60-65x6-8 micr. long, slender, at- 

 tenuate downward. ODOR and TASTE none. 



On the ground or debris of frondose woods of southern Michigan. 

 Ann Arbor and surrounding region. July-August. Infrequent. 



Characterized primarily by its spores and its stuffed stem. It 

 differs from the preceding also in its rather constant colors. Most 

 of our plants were entirely yellowish-ochraceous when fresh and the 

 stem was not hollow. The thin structure of the cap separates it 

 from other yellowish species. Its name is misleading, since in its 

 near relative, C. infundibuliformis, the tube is continuous from the 

 stem to the surface of the pileus, while here the cap is not per- 

 forated, and the stem usually not hollow except in age. My ob- 

 servations agree with those of Ricken in these respects. Cantherel- 

 lus lutescens is a related species, with an orange-yellow stem, black- 

 ish-brown, floccose-scaly cap and orange gills. Its spores are said 

 to measure 10-12x7-8 micr. 



