178 



Mycologta 



Laccaria amethystea (Bull.) Murrill 

 Amethyst Laccaria 



Plate 8. Figure 2. X 1 



Pileus thin, broadly convex, umbilicate or centrally depressed, 

 solitary or gregarious, 1.2-2.5 cm - broad; surface hygrophanous, 

 brown or violaceous-brown when moist, grayish when dry, un- 

 polished ; lamellae subdistant, adnate or decurrent, violaceous, 

 color more persistent than in the pileus ; spores globose, verrucu- 

 lose, 8-10 /x; stipe slender, equal, flexuous, hollow, concolorous or 

 paler, 2.5-5 cm - l° n g> 2 ~4 mm - thick. 



This beautifully colored plant occurs sparingly on damp ground 

 in shaded places throughout eastern temperate North America 

 and in Europe. The specimens figured were quite small, only 

 half the usual size of the species, which has been considered by 

 some a variety of L. laccata. 



Leptoniella conica Murrill, sp. nov. 

 Leptonia conica Murrill 

 Cone-shaped Leptoniella 



Plate 8. Figure 3. X 1 



Pileus conic, not fully expanding, gregarious to subcespitose, 

 1.5 cm. broad and I cm. high; surface glabrous, hygrophanous, 

 very slightly striate, umbrinous, becoming fuliginous on drying; 

 margin slightly paler, incurved when young, entire ; context very 

 thin, pallid, without odor but with a very sweet, farinaceous taste ; 

 lamellae adnexed, slightly ventricose, subcrowded, pale-rose-col- 

 ored, concolorous and entire on the edges ; spores oblong, decid- 

 edly angular, obliquely apiculate at the base, pale-rose-colored 

 with a large shining nucleus, 10-12 X 5/*; stipe slightly tapering 

 upward, concolorous, smooth, glabrous except at the base, where 

 it is finely whitish-mycelioid, solid or somewhat hollow, 4-5 cm. 

 long, 2-3 mm. thick. 



Type collected by W. A. Murrill in damp soil among sticks and 

 leaves on the bank of the Bronx River in the New York Botanical 

 Garden, July 27, 191 5. Known only from the type locality. 



