HymeuomycetfB, AgaricaceiB, Leucosporoe, Rnssula. 131 



ridi et sabbadio intermixto, lula viscida, cute separabili, praecipue 

 ad margiuem, glabra; margiiie aequali; coutextu crassiusculo, albo, 

 prope cutem rubro, amaro et piperino ; lamellis albis, sed mox ad 

 liavum colorem nutautibus, paucis, brevibus, proi^e stipitem subfur- 

 catis, veuoso-conuexis, iutus augustissimis, extus rotundatis, sub- 

 distantibus, subangustis, stipite plus v. minus colore roseo v. vi- 

 noso-purpureo maculato, basi bulboso, spugnoso, 6-10 cm. longo, 

 2-5 cm. crasso ; sporis pallide flavis, ecbinulatis, globosis v. sub- 

 globosis, 7-8,5 [x diam. 



Rab. ad terram in silvaticis, prope Yellowstone Lake, Wyoming, 

 Amer. bor. (Win. J. Robinson). 



5. Russula ochroleucoides C. H.Kauffm., Mycologia v.IX, 1917, p.lCa.— 495 

 Pileo 6-12 cm. lato, amplo rigido, couvexo, mox expanso applanato, 



e flavo-stramineo pallide ocliraceo, centro plerumque e pallide 

 ochraceo rubroochraceo, pellicubi adnata, mox sicco et e pulveru- 

 leuto subrimoso, margine obtuso aequali ; carue crassa compacta, 

 • alba, immutabili v. aetate leniter sordida ; lamellis adnexis v. Yv 

 beris, parum angustis, antice rotundatis latisque^ albis v. albidis, 

 e confertis subdistautibus, uonnulHs brevioribus intermixtis, saepe 

 postice furcatis, intervenosis ; stipite 4-6 cm. longo 1,5-2 cm. cr., 

 brevi, rigido, aequali v. basi angustato, albo, glabro v. subpruinoso, 

 spongioso-firmo ; sporis aequalibus v. minute rugosulis, 7-9 (x (api- 

 culo inchiso), in massa albis ; cystidiis rainutissimis; basidiis circ. 

 40 * 9 ; sapore tardo, leniter amaro-acidulo v. iugrate amaro; odore 

 leniter aromatico v. non. 



Hab. gregatim ad terram in silvis, Elkemont Tennessee et Ann 

 Arbor Michigan, Amer. bor. 



6. Russula astringens Burliugh., North Am. Fl. IX, 4., p. 427 (1915). — 496 

 Pileo hito convexo, dein plano v. centro parum depresso, 9-11 cm. 

 bito; superflcie brunneo-rubro-sanguinea v. rubro-brunnea, centro 

 obscuriori, uda viscida, cute ad marginem separabili, glabra; mar- 

 gine aequali ; contextu prope cuticulam superflcie concolori, coe- 

 terum albo, firmo, juventute miti, maturitate amaro v. phis minus 

 adstringeute, odore parum foetido, arescendo magis ingrato et diu 

 persisteuti ; bimehis albis, dein palHde flavis, aequahbus v, raro 

 nonnullis brevioribus, ad stipitem subfurcatis v. quandoque mar- 

 ginem versus, extus latioribus intus acutis et prope stipitem le- 

 niter sinuatis v. depressis, confertis ; stipite albo quandoque rubro 

 tincto, firmo, 3,5-5 cm. longo 1,5-3 cm, crasso; sporis flavescenti- 

 bus, elhpsoideis, echinulatis, 7-8 ^ 5-6. 



