Murrill : Dark-Spored Agarics 



259 



1. Deconica coprophila (Bull.) Sacc. Syll. Fung. 5: 1058. 1887 



Agaricus coprophilus Bull. Herb. Fr. pi. 566, f. j;*hyponym. 1791 ; 

 Pers. Syn. Fung. 412. 1801. 



Pileus hemispheric to expanded, umbonate, 2-4 cm. broad ; sur- 

 face smooth, f ulvous-isabelline ; lamellae arcuate-subdecurrent, 

 broad, livid-blackish; spores 13-14 x 8^; stipe attenuate upward, 

 smooth, pallid, pruinose to glabrous above, glabrous and shining 

 below, subfistulose, 5-8 cm. long, 2-3 mm. thick. 



Type locality : France. 



Habitat : On manure or manured ground. 



Distribution : New York and Michigan ; also in Europe. 



Illustrations: Bull. Herb. Fr. pi. 566, f. 3; Cooke, Brit.. 

 Fungi, pi. 608 A (60S A). 



There are several specimens bearing this name at Albany col- 

 lected by Peck in New York, and also one collection sent by 

 KaufTman from Michigan. The spores of Peck's plants are elon- 

 gate-ellipsoid, smooth, isabelline under the microscope, about 12 x 



6-7 /X. 



2. Deconica rhomboidospora Atk. Ann. Myc. 7: 368. 1909 



Pileus ovoid to convex, gregarious to subcespitose, 0.5-1 cm. 

 broad ; surface dry, smooth, not striate, ochraceous to clay-colored, 

 adorned on and near the margin with whitish flocci ; context ochra- 

 ceous, with slightly mealy taste and no characteristic odor ; lamellae 

 adnate and decurrent, about 2 mm. broad, becoming chestnut- 

 colored with whitish, dentate edges ; spores ovoid to subrhomboid, 

 smooth, purplish-brown, 5-7 x 4-5 fi ; stipe flexuous, hollow, chest- 

 nut-colored within, clay-colored and whitish-fibrillose without, 2-3 

 cm. long, 2 mm. thick ; veil evident when young, white, soon 

 appendiculate. 



Type locality : Ithaca, New York. 



Habitat : On leaves and decayed wood on the ground. 



Distribution : Known only from the type locality. 



The type specimens, which I have not seen, were found by Jack- 

 son -on June 5, 1904. According to Atkinson, it is near D., nuci- 

 seda Fries. 



3. Deconica tomentosa sp. nov. 



Pileus convex to nearly plane, not umbonate, solitary, about 1.5 

 cm. broad; surface dry, not at all striate, uniformly ochraceous- 



