— 34 — 



pulverulcnti ; conidia catcnulata, globosa v. obscure 

 subcuboidea ( 18-20 [j, diain.), tenui tunicata, laevia, 

 byalina, granuloso-farcta. Oosporae in parenchyniate 

 foliorum imincrsae, globosae (50-65 ;j, diam.), subopace 

 fuliuiiieae, laevissimae, |)rotoplasinate hyalino granuloso 

 farctae, oogoiiio hyalino monos()oro inclusae. 



Hab. Ad folia nec noii caules vivos Sj)ergulariae grandis 

 in uliginosis j^rope Bahia Blanca, Aug, 1886. 



Ohs. Conidia et oogonia eodem tempore ac in codem 

 folio \igentes. Fungillus oogonicus folio luci objecto, 

 ut macula opaca tantum conspici potest. 



PYRENOMYCETEAE Fr. 



111. Phyllactiisia aktarctica Speg. (n. sp.). 



Diag. Perithecia hypophylla, sparsa, mycelio, oidia- 

 ceo albo parcissimo mox evanido insidcntia, globosa, 

 (130-140 i^, diam.), atra, vcrruculoso-aspcrula, opaca, 

 glabra, sicca non v. vix. cupulata, superne 6-8 appen- 

 dicibus subcorouata ; ap[)endiccs simpliccs, cylindraccae 

 (150-200 X 9 [;,), rectae, divaricatae, apice obtuse acu- 

 tatae, basi vesciculoso-intlatae (40 X 30 \x), hyalinae, 

 continuae, laevissimae. Asci 8 v. 10 in quoque perithecio 

 cyliudraceo-cUiptici y. subovati, apicc latc subtruncati, 

 basi crasse brevissimeque noduloso-stipitati (80-95 X 

 22-24 \j.), aparaphysati, bispori (an (juandoque tetra- 

 spori?) ; sporae ellipticae y. ovoideae (32-33 X 15-20 [x), 

 utrinquc obtusc rotuiidatae, continuae, laeves non y. 

 grosse 1-guttuIatae, hyalinae. 



Ilab. Ad folia viva Ribis magellanici in collinis Lion 

 rang prope Gregory bay, 20 April. 1882. 



112. PHYLLACTllNIA SUFFULTA (Rcb.) SaCC, 



Ilab. Ad folia Yiva AnartJirophylli rigidi prope Mi- 

 sioneros secus Rio Santa Cruz, Jan. 1882. 



