SPEGAZZIXI: FUXGI AEGENTINI. 83 



Hah. Vulgata in lierbosis umbrosis prope La Plata, liie- 

 mali tempore per annis 1888- 92. 



Ohs. Pileus primo ovatus deiu subeampaiiulatus postremo 

 hemiispliaerico-expansns (5-8 cm. diam. = 2-3 cm alt,) sem- 

 per grosse umbonatus. umbone glabro laevi obtuso, saepius 

 centro depressulo, in jjrima juventnte fusco -pallescens v. cer- 

 vinus totus laevis, per aetatem centro laevis. medio diffracto- 

 areolatns maculatusque , ambitu candidus squamulis plus 

 mdnusve laxis fibrilloso-v. araneoso-farinosulis detersilibus 

 ornatus, margine integer v. vix erosulus estrius; caro crassiu- 

 scula (5-8 mm crass. j flocculosa exsucca candida v. perdilute 

 subrosea: lamellae confertae membranaceae utrimque attenua- 

 tae sed obtusiuscnle rotundatae latiusculae (28-32 mm long. 

 = 6- () mmlat. ), a stipiteremotae. acie integerrimae candidae; 

 stipes rectus erectus (12-18 cmlong. = 6-12 mm diam.) teres 

 basin versus sensim incrassatulus, ima basi abruptiuscule in 

 bulbo subgloboso (30-35 mm diam. i expansus. sub lamellis 

 minutissime albo-farinosulus, ceterum laevis t. rarius (per 

 aetatem i subimperspieue adpresseque fibrilloso-granulosus, 

 candidus (tactus leniter roseus ut in senectute) fibroso -tenax, 

 fistulosus, cavitate fibrillis sericeis columellam utroque ápice 

 adnatam efformantibus donata, bulbo saejjius mycelio denso 

 gossypino candido vestito. Collarium pilei coriacellum rugu- 

 loso-elevatum areolam (4-5 mm lat.) majusculam circum sti- 

 pitis apicem limitans. Annulus majusculus mobilis membrana- 

 ceus tenacellus margine fibrillosus din persistens. Sporae 

 ovatae( 16-18 ;■«. long. = 9-10 ;j- diam.) subinaequilaterales, 

 inferné subaj)iculatae, primo granuloso -farctae, dein grosse 1 - 

 guttulatae, laeves, liyalinae: sporarum pulvis primo albus. se- 

 rius perdilute roseus. Odor fere nnllus. 



Sj^ecies praecedenti sat affinis sed carne exsucca pileoque 

 farinosulo acute distinguenda. Edulis. 

 3. Lepiota kerandí Speg. ( n. sp.). 



Diac). Procera, alhesceiis, piJeo centro crassiu'^ciile umhonato 

 testa ceo- fusco, ambitu albescente dense niinuteque testaceo-squa- 

 imiloso, lamellis alhis integris, sfijrite laevi cylindraceo hasipar- 

 cissitne incrassato fistuloso, annnlo luohiJi, sporis ellipsoideis 

 ininoribus grosse 1-guttulatis. 



Hall. In j)ratis sub arborum umbra. La Plata, Mart. 1888. 



Obs. Pileus primo ovatus dein conoideo -expansus postremo 

 applanatus (4-5 cm diam. i centro umbone crassiusculo obtuse 



