fungí argentini 249 



Diag. Majuscula, globoso-depressa v. globoso-subturbinata (40-70'" 

 diam. = 30-40'" alt.), sursum obtuse rotundata, deorsum ro- 

 tundato-coarctata, levissima non v. vix basi parce breveque subra- 

 diatim plicatula, amoeneaurantia; peridium exterius absens;pe- 

 ridium interius tenui-membranaceum, chartilagineo-tenacellum, 

 levissimum v. antice minutissime ac laxe punctis albis exaspera- 

 tum, superne castaneo-f ulvum v. castaneo-croceum, inferné lute- 

 scenti-fulvLim v. fulvo-aurantium, gleba farctum, eaque arete 

 adnatum, base sterili nulla, primo integrum dein per aetatem ad 

 partem superiorem irregulariter ao subreticulatim lacero-dehi- 

 scens; gleba elástica capillitio tenuissimo, gossypino-compactiu- 

 sculo, homogéneo composita, pulvere sporigero inspersa, primo 

 lútea, dein centro cinereo-fulva, et periferice crocea v. aurantio- 

 subsanguinea ; flocci fulvi, gráciles (3 crass.), simplices, leves, 

 parce septulati; sporae globosae (3-5 diam.), ecaudatae, excen- 

 trice 1-grosse guttulatae, leves (an minutissime laxeque rugulo- 

 sae?), fulvo-croceae. 



Species B. bicoloris Lev. (Ann. Se. nat. III, v. V, p. 162), af- 

 finis, sed un videtur ab ea satis abborrens. 



Hab. Ad terram aridam sabulosam prope Concordiam (Uruguay), 

 Mart. 1881, leg. Cl. J. Cisneros (sub n. 61 .) 



249. BoviSTA (Euhovista) glauco-ciinerea Speg. (n. sp.) 



Diag. Mediocris, globulosa (25-30'" diam.), basi appendiculato- 

 radicata, levissima, griseo-subplumbea, opaca; peridium exterius 

 absens; peridium interius tenui-membranaceum, chartilagineum, 

 subfragile, levissimum, glaberrimum, extus griseo-subplum- 

 beum, intus atro-cinereum, gleba farctum, atque ab ea absoluta 



ostiolatutri v. astomum,- gleba farctum, coluinella atque base sterili plana 

 destitutum ; sporae caudatae v. ecaudatae, leves v. verruculosae. 



Sect. I. Euhovista: Peridium interius ad máturitatem irregulariter lacero- 

 dehiscens. 



Sect. II. Pseudogeaster: Peridium interius ad maturitatem satis regulari- 

 ter ostiolo perforatum. 

 Ltcoperdon (Tourn.) Tul. Peridium dúplex exterius evanescens, interius per- 

 sistens, gleba farctum, columella destitutum, base sterili bene manifesla do- 

 natum : sporae caudatae v. ecaudatae, leves v. verruculosae. 



Sect. I. Eulycoperdon: Basis sterilis floccoso-stipala v. cellulosa, superne 

 eximie determinata, atque a capillitio glebae plañe discreta. 



Sect. II. Pseudobovista: Basis sterilis floccoso-stipata cum capillitio glebae 

 absolute continua. 



Sect. III. Globaria: Basis sterilis cellulosa cum capillitio glebae concreta 

 ac continua. 



