fungí ARGENTINI 103 



cylindraceae, utrinque obtusiusculae (55x18), 4-septatae, ad 

 septa leniter constrictae, opace atro-fuligineae. 



118. Meliola? pulveracea Speg. (n. sp.) 



Diag. Mycelium late irregulariterqiie eífusum, atrum, tenue, velu- 

 tiniim; hyphae repentes dense intricato-ramosae, parce septu- 

 latae, gráciles (3 crass.), flexnosae, simplices, fuligineae, hinc 

 inde ramulos fértiles, erectos (120-300x5), ápice íntegros 

 emittentes ; conidia solitaria, acrogena, clavato-fusoidea, 3-sep- 

 tata, lóculo infero (seu pedicello)plus minusve elongato, ad septa 

 non V. vix constricta (30-40 x 6-7), fuliginea ; perithecia mi- 

 nutissima (60-80), hinc inde sparsa v. laxe gregaria, globosa, 

 glaberrima, papilloso-scabra, subcarbonacea; asci elliptici v. 

 obovati-, sursum obtuso crasseque tunicati,deorsum abruptebre- 

 vissiraeque coarctato-stipitati (28-35x12-15), octospori, apa- 

 pbysati; sporae cylindraceo-subclavulatae, utrinque obtusae, 

 medio 1 -septatae, ad septum leniter coarctatae, loculis minute 

 V. grosse 2-guttulatis, hyalinae ; an postremo 3-septatae, fusce- 

 scentesque? 



Eah. Ad folia coriácea viva plantae cujusdam, Apiahy, Brasilia 

 meridionali, Maj. 1881, leg. Cl. Dr. J. Puiggari (sub n. 1,491.) 



Ohs. In iisdem foliis altera adest species, quam ad interim Melio- 

 lam spinigeram voco : Mycelium aterrimum, in pulvinulis spar- 

 sis emisphaericis (1-2'" diam.), lanoso-comp:ictis aggregatum, 

 fasciculis hypharum erectis, rigidis concoloribus, parcis, acutis, 

 spiniformibus hirtum; perithecia immersa, atra, carbonacea, 

 globosa papillulosa (150-220); ascinon visi ; sporae cylindraceo- 

 ellipticae, utrinque obtusae, 4-septatae, atro-fuligineae. 



119. Lasíospiiaeria racodium (Eers.) Ces. et DNtrs. 



Hab. In truncis salicinis dejectis putrescentibus, Boca del Ria- 

 chuelo, Jul. 1881. 



Obs. Perithecia late denseque gregaria, saepe subiculo ozoniaceo, 

 tomentoso, atro insidentia, globulosa v. subovata (400-450 

 diam.), carbonacea, atra, ostiolo papillulato per aetatem saepius 

 irregulariter obliterato ornata, pace laxeque pilosa in senectute 

 non raro nuda; hyphae subiculi repentes, flexuosae, dense intri- 

 cato-ramosae, parce septulatae (5 crass.); asci longissime cyiin- 

 draceo-subclavati, ápice truncato-rotundati, deorsum plus mi- 

 nusve atteuuato- pedicellati (p. sp. 150-180x1 8-20=:ped. 40-80 



