582 THE AGARICACEAE OF MICHIGAN 



This species is said to be very common in Europe. I have only 

 one record and the specimens are lost. It was most sharply marked 

 by the quadrate, 4-angled spores. This is a character given by 

 nearly all authors and by the figures. Our plants approached closely 

 \. staurospora Bres. i Fung. Trid., Vol. I, p. 18), and this species 

 and A. pascua (sense of Ricken) seem to be very similar. It 

 certainly is not a common species with us and I did not observe 

 any olive tints, such as occur in our W. versatilis. 



624. Nolanea versatilis Fr. 



Monographia, 1803. 



Illustrations: Fries, Icones, PL 98, Fig. 5. 

 Ricken, Pdiitterpilze, PI. 71, Fig. 7. 

 Plate CXV of this Report. 



PILEUS 1-3 cm. broad, at first conic or elongated-oval, then 

 campanulate, fragile, obtuse, at length expanded and subumbonate, 

 silky-shining, sometimes silky-fibrillose, almost glittering, color 

 variable, livid-fuscous, olivaceous-brown, smoky-tinged, subhygro- 

 phanous. FLESH thin, submembranous, grayish. GILLS narrowly 

 adnexed, almost free, ventricose and broad in front, snbdistant, gray, 

 becoming smoky-flesh color, edge minutely fimbriate. STEM 3-6 cm.' 

 Ion- 1-1 mm. thick, equal, hollow, often twisted or compressed, 

 split i in- longitudinally, fibrillose-striate, shining, glabrous or floc- 

 cuh.se, pallid then pale fuliginous or fuscous. SPORES tuberculate- 

 angular, longer than wide, 9-11x6-7.5 micr. (few longer), flesh 

 color in mass. CYSTIDIA numerous on edge of gills, few elsewhere, 

 ventricose, often acuminate-pointed, 15-65x12-16 micr. ODOR and 

 TASTE slight or none. 



Gregarious. Among grass in low moigt woods Aun Art)01% New 

 Richmond. July-August. Infrequent. 



This species was abundant in a single wood-lot during one season; 

 elsewhere ii occurred as few individuals. It varies in size and 

 f ape ,wl,,,i " limits ); often it has the shape and size of Cooke's 

 figures ol A. pascua, at other times the caps may be narrow and 

 stem slender and longer, all in the same patch. The cap is beauti- 

 fully silky and shining and usually has a somewhat olive or greenish 

 hue which suggests the -litter of metal. The shape of the young 

 Planl .s often like that of Hygrophorus conicus or of an Inocvbe. 

 '" our specimens the stem was frequently somewhat flocculose. 



