Hymenomyceta3, Agaricaeese, Leucosporse, Lactarius. 85 



(1907; p. 346. — Pileo carnoso, convexo v. subplano, dein infun- 

 dibuliformi, glabro, zonato, e cinnamomeo-iiavo in sicco rubro- 

 brunneo ; carne iiavida, lacte flavo, sapore acri ', lamellis confertis, 

 adnatis v. decurrentibus, cinnamomeo-flavis, tetate et arescendo 

 pruinosis; stipite cylindrico v. srepe compresso, farcto v. cavo, 

 farinoso-pruinoso v. subglanduloso, albido v. pallido; sporis glo- 

 bosis, 7-8 [X. diam. 



Hah. ad terram sub Quercu, Standford Univers. California, 

 Amer. bor. — Pileus B-6 cm. latus; stipes 5-6 cm. longus, 1-1,5 

 cm. cr. 



17. Lactarius proportionalis Britz. — Sacc. Syll. XI, pag. 31. — 346 

 Britzelmayr, Eevis. Hymenomyc. IV (1899) p. 16. — Pileo vix 

 fibroso, 7 cm. lato, convexo, centro depresso, flavido v. flavido- 

 ochraceo; pileo opaco; stipite pileo concolori, 5 cm. longo, 10 mm. 

 cr., basi subincrassato ; lamellis subconfertis, adnatis, parum decur- 

 rentibus; lacte albo, acri; carne parum compacta; massa sporarum 

 alba; sporis subglobosis 8*6, asperulis. 



Jlab. ad terram in Bavaria. — Lacf. cyatliulce affinis. 



18. Lactarius Sumstinei Peck, Bull. Torr. Bot. Club, XXXII (1905) 317 

 p. 78. — Pileo subtenui, sicco, glabro, lequali v. leniter et radia- 

 tim rugoso, centro depresso, margine expanso v. decurvo, griseo 



V. paliide brunneo-fumoso ; carne albida, lacte albido, immutabili, 

 sapore acri ; lamellis tenuibus, distantibus, iniequalibus, decurren- 

 tibus, flavo-cremeis; stipite subsequali, glabro, farcto v. cavo, pileo 

 concolori; sporis globosis, echinulatis, flavidis, 7,5-10 jx. latis. 



Hab. in herbidis silvaticis, Kittanning Pa. Amer. bor. (S. E. 

 Sumstine). — Pileus 2,5-7,5 cm. latus; stipes 2,5-5 cm. longus, 

 6-12 mm. cr. 



19. Lactarius irregularis A. Blytt, Norges Hymen. in Vid.-Selsk. 348 

 Skr. (1904) n. 6, p. 97. — Pileo 4-5 cm. lato, irregulari, margine 

 undulato, tenui, partim striato, nitido, arido, initio rufo-fusco dein 

 pallido, argenteo, glabro, demum angulato-rimoso; lamellis rotun- 

 dato-adnatis, antice tenuibus, albis, dein flavescentibus ; stipite 3 

 cm. loug., albo, glabro, subcavo, apice constricto; lacte albo, immu- 

 tabile, acerrimo. 



Hab. in silvis ad Pansberg Norvegiae. 



20. Lactarlus subalpinus A. Blytt, Norges Hymen. in Vid.-Solsk. 34t) 

 Skr. (1904) n. 6, p. 94. — Pileo 4 cm. lato, plano, disco subde- 

 presso, nitido, viscido, glabro, versicolori, margine albido, dein ci- 

 nereo-zonato, flavescenti, contro atro; lamellis confortis, postice 



