.,, THE AGARICACEAE OF MICHIGAN 



age glabrous, sometimes rimose, even, veil none. FLESH thin or 

 thickish on disk, pallid. GILLS adnate, often seceding, broad, close, 

 pallid or alutaceous at first, then rusty-brown, edge white-fimbriate. 

 STEM I 6 cm. Long, L-3 mm. thick, equal or slightly thickened toward 

 base or apex, subrigid, toughish, terete, somewhat silky-shining, 

 stuffed by a white pith, ochraceous, darker in age. SPORES ellip- 

 ticaloval, L2-15x8-9 micr., smooth, rusty-brown in mass. CYS- 

 TII'IA on edge of gills ventricose flask-shaped, sometimes capitate, 

 25-35x9 micr. ODOR none. TASTE slightly disagreeable. 



Gregarious or scattered. On lawns, roadsides and grassy pas- 

 tures. Throughout the State. May-September. Common. 



This species occurs on lawns with Psilocybc foenisecii and 

 Pholiota praecox, during the warm and rainy weather in May and 

 June, although it may be found throughout the season. Its hemis- 

 pherical cap and rusty-brown spores distinguish it from similar 

 species of the purple-brown-spored group. Its spores and size 

 separate it from nearby species of Naucoria. -V. verracti Pr. has 

 beeD reported from Ohio. According to Ricken, this has spores 

 measuring 12-17x8-12 micr. Its stem is said to be rough-rtbrillose. 



546. Naucoria platysperma Pk. 

 Torr. Bot. Club. Bull. 25, p. 321. 1898. 



PILEUS 2-4.5 cm. broad, convex then subexpanded, slightly viscid 

 when moist, ochraceous, somewhat darker when young, glabrous, 

 failing, even, veil slight. FLESH white, thick on disk. GILLS 

 adnate, broader behind, close, thin, yellowish-ochre at first then 

 fuscous-cinnamon, edge pallid-fimbriate. STEM 3-5 cm. long, 2-1 

 nun. thick, tough, hollow and usually compressed, equal or tapering 

 below, ochraceous, often striate above, slightly flocculose with 

 whitish floccules. SPORES 13-15x7-10, elliptical, or sometimes of 

 rations shapes, triangular, heart-shaped, lobed, etc., fuscous-brown 

 in mass. STERILE CELLS on edge of gills fusiform. 



Gregarious. On dung-hills, pastured woods and grassy places. 

 Bay View, Ann Arbor, New Richmond. May, June and September. 

 Frequen! during some seasons. 



Characterized by the flattened or irregular spores which are pres- 

 ent in each mount, although in small numbers. The size of the 

 plant and its compressed stem are often good marks for its iden- 

 tification. Peck gives a greater width for the spores, but this is. 

 rare in our plants, which were referred to him and verified. The 

 original description was made from California specimens. 



