fungí argentini 245 



plúmbea, parce nitentia. Sporangia majuscula, elliptico-rliom- 

 boidea, compressa, (3'" diam.=0,5-l"' crass.) in sicco contractula 

 acundulata, fusco-plumbea, sub nitentia, funiculo albo, valido, 

 breviusculo suffulta. Sporae ellipticae, utrinque plus minusve 

 acutato-rotundatae (12-14x7-9), tenuiuscule tunicatae, granu- 

 loso farctae, hyalinae. 



'FoTm.SiChüensis Tul. 1. o. p. 84 nostrae valde affinis, sed ómni- 

 bus notis bene non congruit. 

 Hab. Ad ramos dejectos putrescentes Rosae speciei cujusdam in 

 hortis, Bonaria, Oct. 1880, leg. Cl. Dr. C. Berg. 



241. NlDULARiA BONAERENSis Speg. Fung. Arg. pug. III, n. 86. 



Hab. Ad ramenta vegetalia putrescentia in umbrosis uliginosis, Re- 

 coleta, Jun. 1881. 



Obs. Sporoforae filiformes, gráciles (1 crass.), longissimae, dense 

 pseudoseptatae, hyalinae, monospermae, densissime intricatae, 

 subsimplices; sporae acrogenae, ovoideae v. elliptico-ovoideao 

 (15x10), hyalinae, granuloso farctae. Sporangia subglobosa v. 

 elliptico-ovoidea (1,5-1 ,6'" long. — 0,7-0,9'" crass.) irregulariter 

 sed parce mutue compressa, atro-plumbea, levia. 



Lycoperdaceae (Fr.) DBry. 



242. Mycenastrum chilense Mtgn.-Speg. Fung. Arg. pug. II, n. 106. 

 Hab. Ad terram in planitie pamparum, Conchas, Buenos Aires, 

 Quilmes, Ensenada, Chascomús, Dolores, Tordillo, Ajó, Tuyú, 

 peraest. 1880-81. 

 Obs. Peridia globosa, v. elliptico-ovoidea, v. subconoideo-ovoidea, 

 magnitudine máxime ludentia (30-120'" diam.); cortex exterior 

 teniusculus, in juventute albus, cortice interiori arete adnatus, 

 per aetatem fuscescens ac mox frustulatim totus evanescens; 

 cortex interior, crassus (2-4'" crass.) in prima aetate cortice 

 exteriore tectus, albus, carnoso-tenacellus, mollis, iuteger, dein 

 denudatus, levissimus, gradatim fuscescens, postremo fusco-fuli- 

 gineus V. sordide gilvo-fulvus, durus, tenaciter coriaceus, atque 

 per aetatem superne irregulariter obliterato-pertusus v. breviter 

 3-5-laciniato-fissus. Gleba primo mollis, succoso-subcarnosa, 

 alba, dein flavo-virescens, carnoso-spongiosula, postremo pulve- 

 rulento-lanuginosa, intense fuligineo-olivacea, vix periphaerice 



