FüNGI ARGENTINI 227 



lato-cupulata, sursum late irregulariterque aperta, deorsum 

 emisphaerico - rotundata (30-45'" long.-25 - 35'" lafc. ad os), 

 membranáceo -carnosula, marginem ver sus gradatim attenuata 

 (0,5-1'" crass.), mollis sed tenacella, candida, glaberrima, intus 

 extuque undulato-subcrispulata, basinon v. vixplicatulo-reticu- 

 lata, centro in mycelio subterete, lougiusculo (10-15'"x5"'), 

 crasse fibroso-strigoso, dense intricato-ramoso, albo producta 

 radicataque. Stipes fragilis ex basi interna volvae saepius nonni- 

 bil excéntrico exsurgens, erectus quandoque teres, quandoque 

 antice V. postice parce incrassatus (70-90'" long.xi2-20"'crass), 

 late fistulosus, ápice truncatus ac late pervius, basi acutiuscule 

 attenuato-adnatus, intus extusque irregulariter denseque papu- 

 losus, saepeque bine binde perforatus, candidus; parietes ejus- 

 dem crassiusculae (3-5'" crass.) intus grosse spongioso-alveolatae, 

 tribus V. quatuor tunicis tenuiusculis, laxissime juxtapositis, 

 hinc inde dense reticulato-confluentibus compositae. Capitulum 

 emispbaericum (25'" diam. =10-12'" alt.), 16-24 perforatum, ex 8 

 Y. 10 ramis dense clathrato-junctis, ex pedicelli ore apicali crassi- 

 uscule marginato et reñexo exsurgentibus, articulis brevibus, 

 subtrigonis (4-7'" long,x2-3'" crass.), transverso densissime ac 

 majuscule plicato-rugosis compositum. Pulpa sporifera capitu- 

 lum prima aetate implectens ac turgens, compactiuscula, dein 

 mucoso-liquescens atque diffluens, obscuro olivácea, foetens. 

 Sporae cylindricae v. cylindraceo-ellipticae, utrinque obtusae 

 (3-5x1,5), rectae V. rarius inaequilaterales, e hyalino perdilute 

 cMorinae. 

 Ilab. Ad terram arenosam inter coespites Cestri Parqui, Barrio del 

 Eetiro, Montevideo, leg. Cl. J. Arechavaleta (sub n. 217.). 



(Continuará) . 



