56 HymenomycetPe, Ag-firicacpse, Leucosportv, Marasniius. 



atqur subcollariato-adnatis, albis; cystidiis i^soideo-ampulluliformi- 

 bus, 50-60 « 12-15, levibus ; basidiis obclavulatis, 20 *< 7-8, sterig- 

 matibus teuuibus acutiusculis pra^ditis; sporis globosis 7-8 u. diam., 

 obtuse angulatis, grosse 1-guttuIatis, levibus, hyalinis. 



Ilah. ad ramenta et sohidias ligneas iuter folia putrescentia C a- 

 suarinarum, La Plata Argentina3. 



21. Marasmius erumpens Massee, Kew Bull. 1898, p. 119. — Pileo ex is 

 hemisphiurico expanso, membranaceo, glabro, albido, margine sem- 

 per subinvoluto, vix 1 mm. lato; stipite filiformi, glabro, albido, 

 basi tuberculo flocioso pr.vdito; lamellis postice decurrentibus, sub- 

 distantibus, albidis; sporis obovatis, hyalinis, 5-6 «4; basidiis cla- 

 vatis, 25-30 «4-5. 



Hah. ad ramos dejectos, Borneo. — Gregarius, M. sarmentoso 

 Berk. iiffinis. 



22. Marasmius brachypus Speg. Fg. Arg. novi v. crit , p. 111 (1899). ^^ 

 — Sparsus v. laxe 3-5-gregarius; pileo late homisphserico v. con- 

 vexo-plano, '/ -1 cm. diam., cfntro umbilicato-depresso atque sor- 

 dide rufescente. ambitu dense striato-sulcato, sordide albesc«nte, 

 margine obtuso crenulato glabro opaco, tenuiter membranaceo, sed 

 firmulo; stipite pro ratione seraper brevi,gracili, 6-12 mm. longo, 

 1-1'/., mm, crasso, centrali, tereti, erecto, recto, ievi, glabro, sar- 

 sum albescente, postice rufescente, basi fuscescenie minute mo- 

 diceque incrassato-subbulbilloso atque laxe albo-araneoso insititio; 

 lamellis linearibas, angustissimis, confertiusculi^, aquose albidia, 

 antice acatis. postice truncato-adnatis, acie integerrimis ; sporis 



e globoso ovatis, levibus, grosse 1-guttuIatis, hyaliuis, 5-6 _a. 

 diam. 



Hah. in cortice vetustiore truncorum Casuarinae spec. pr. 

 La Plata Argentimt'. — Species pulchella mox recogaoscend^, ha- 

 bitu a genere nonnihil desciscens, sed natura lenta e sicco revivi- 

 scens nulio niodo separanda. 



23. Marastnius bonaerensis Speg. Fg. Arg. novi v. crit., pag. 110 i8i 

 (1899). — Pileo semper hemisphcurico, 3-5 mm. diam., crassiu- 

 scule membranaceo, leni-o, levi, glabro, nec umbilicato nec striato, 



in juventut^ e roseo rufescente, per jotatem ex albo roseo; stipito 

 tenui, rigidulo, erecto, recto v. flexuosulo, 1-1'/., cm. longo, '/, 

 mm. cras30, suvsum albo glabroque, deorsum plus minusve rufe- 

 scftnte v.lateritio et fugacissime laxeque albo-pulverulento, opaco, 

 insititio; lamellis subcrassiusculis, subconfertis, latiusculis, postice 

 primo subsinuato-adnatis, dein leuiter decurrentibus atque subcol- 



