214 
GEO. F. ATKINSON 
Inocybe nigrescens n. sp. 
Gregaria, 4-6 cm. alta; pileo campanulato vel convexo dein expanse, 
umbonato, 1.5-3 cm. lato, pallide-brunneo, adpresse-fibrilloso-squa- 
moso, versus marginem interdum leniter rimuloso; lamellis stipite 
adnexis, ellipsoideis, angustatis, avellaneis dein argillaceo-luteis ; 
cystidiis cylindricis vel subventricosis, subpedicellatis vel nonpedicel- 
latis, membrana moderatim crassa praeditis, 50-75x12-16/1; sporis 
subglobosis vel leniter elongatis, prominenter radiatim nodulosis, 
9-1 1 x 8-10 vel II X 8ai; stipite pallide-argillaceo-luteo, bulboso, apice 
pruinoso, deorsum leniter velutino, siccato nigrescente, 3-4 mm. crasso. 
Ground, woods, near Ithaca, N. Y., July 25, 1917. H. E. Stork. 
Type specimens no. 24260, Herb. Cornell University. On drying the 
entire plant becomes much darker, the stem black. Related to In. 
asterospora, but distinguished by the very slight rimose condition of 
the pileus, the subvelvety stem, blackening as it dries, etc. 
Inocybe ochraceoscabra n. sp. 
Gregaria vel dispergens, 3-4 cm. alta; pileo fulvo-ochraceo, 2-4 
cm. lato, convexo dein expanso, subumbonato vel gibboso, adpresse- 
fibrilloso-squamuloso, umbone frequenter areolato-rimoso et margine 
repando et partito, carne alba; lamellis stipite adnatis, emarginatis, 
albis dein avellaneis, acie albida; cystidiis clavato-ventricosis, pedicel- 
latis, membrana crassa praeditis, 45-60 x 15-2 5 ;u; sporis elongatis, 
leniter noduloso-angulatis, 9-12 x 5-7 ijl; stipite aequali vel deorsum 
tenuiore, 3-5 mm. crasso, brunneo, apice pruinoso, exteriore mem- 
brana tenui, albido, fibrillosa praedito, carne brunnea. 
On grassy ground under young white pine and near hard maple 
trees, Professor Tichener's lawn, Cornell Heights, Ithaca, N. Y., Aug. 
12, 1912. G. F. Atkinson, collector. Type specimens no. 23366, 
Herb. Cornell University. 
Related to In. decipiens Bres., but differs in color and character of 
the stipe, smaller spores, etc. 
Inocybe olpidiocystis n. sp. 
Gregaria, 5-7 cm. alta; pileo pallide luteo, in centro brunneo, 
convexo-depresso, margine repando et partito, 4-6 cm. lato; lamellis 
stipite adnexis, late sinuatis, ventricosis, 8-10 mm. latis, griseis dein 
subferrugineis ; cystidiis ovato-ventricosis, non pedicellatis, membrana 
crassa praeditis 40-60 x 15-30^; sporis subellipsoideis vel subovatis, 
inequilateralibus, levibus, 9-13x6-8^1; stipite albo, fibrilloso-striato, 
1-1.25 cm. crasso. 
In grassy ground. President White's lawn, Campus, Cornell 
University, September 22, 1902. W. Bradfield, collector. Type 
specimens no. 13745, Herb. Cornell University. 
