ATKINSON— NEW SPECIES OF AGARICS. 355 



In shape and color resembles Amanita cinerea Bres. (Fung. Trid. 

 I, 7, pi. I, 1881), but spores larger, basidia two-spored, and stria- 

 tions on pileus more extended. 



No. 371 1, type, C. U. Herb., in sandy ground in woods. Blowing 

 Rock, Watauga Co., N. C. Aug. 19-Sept. 19, 1899. G. F. Atkinson 

 collector. 



Hypholoma comatum nov. sp. Gregariuin vel dispergens, 3-5 

 cm. altum : pileo ovali dein campanulato, albo, demum nigro-griseo 

 et leniter striatulato, 0.5-1.5 cm. lato, adolescente radiatis hyphis 

 dense praedito, dein sericeo-fibrilloso, margine appendiculato : lamellis 

 stipite adnatis, ellipticis, cinereis dein cinereo-nigrescentibus : cystidiis 

 solum in acie lamellarum, numerosis, clavato-ventricosis vel subcylin- 

 dricis, membrana tenui, 40-55 X 10-12 /a: sporis quaternis, anguste 

 subellipsoideis, purpureo-brunneis vel purpureo-nigrescentibus, levi- 

 bus, 12-14 X 6-7 /a: stipite asquali, albo, bulbilloso, recto vel flexuoso, 

 fibrilloso-squamoso, 1-1.5 mm. crasso. 



No. 24195, type, C. U. Herb., on ground on humus and buried 



twigs, lawn by East Ave., Campus, Cornell University, Ithaca, N. Y. 



July 16, 1917. G. F. Atkinson collector. 



Hypholoma confertissimum nov. sp. Dense csespitosum, 8-12 

 cm. altum et 10-20 cm. latum : pileo ovali dein convexo, 1-3.5 cm. 

 lato, hygrophano, pallide argillaceo, demum pallide ochroleuco vel 

 pallide albo, in centro argillaceo et ruguloso, velo universali albo- 

 floccoso, demum pileo fibrilloso-squamoso et appendiculato et pallide 

 cinereo-brunneo maculato vel virgato : lamellis stipite adnato-adnexis, 

 demum liberatis, ellipticis, confertissimis, cinereis dein purpureo- 

 brunneis, acie alba : cystidiis in superficie et acie lamellarum sub- 

 fusoideis-ventricosis, 35-50X11-14^1: sporis quaternis, purpureo- 

 brunneis, levibus, 5-7 X 2.5-3 ji : stipite aequali, recto vel flexuoso, 

 albo, cavo, albo-floccoso-squamoso, fragili, 3-5 mm. crasso, mem- 

 brana mycelii oriente. 



No. 25063, type, C. U. Herb., tufts of 50-100 individuals from 

 dead roots or buried wood, in forest of mixed hard wood, Hoop Pole 

 Ridge, west of Oakland, Md. Sept. 24, 1917. G. F. Atkinson col- 

 lector. This species is related to Hypotonia aggregatwn Peck, but 

 differs in its smaller spores, different cystidia, yellow mat of my- 

 celium, etc. 



Lactarius nigroviolascens nov. sp. Dispergens, 5-6 cm. altus : 

 pileo 3-5 cm. alto, convexo, incurvato, demum expanso et in centrum 

 depresso, interdum umbonato, atro-brunneo, demum fulvo-olivaceo 

 et in centro obscuriore, pruinoso et ruguloso : margine pilei demum 



