1715 



Pyrenomycetese, Perisporiaceae, Dimerosporiom. 407 



po secus Rio das Velhas Brasiliae (J. Arechavaleta). — Species 

 elegantissima Parodiellce? melioloidi (B. et C.) Wiiit. afliuis, nisi 

 identica, facillime novi generis ioter Neclriaceas et Perisporiaceas 

 medii typum sistens. 



22. Dimerosporium nimbosum EU. et Mart. in Journ. of Myc. 1886, j^j^ 

 pag, 125. — Mycelio hyphis repentibus, brunneis, ramosis, ramis 

 brevibus, erectis, conidia oblongo-clavata, 3-4-septata, brunnoa, 

 35-40 s 6-8 gereotibus, et hyphis sterilibus formato, raacuias or- 

 biculares velutiuas, V5-I cm. latas, subinde confluentes caulesque 

 tegentes formante; perithecris centro macuiarum gregariis, erum- 

 pentibus, conoideis, carbonaceo-membranaceis, rugosis, '/3 mm. d., 

 subinde ostioio imperfecte suicato-striato, promiuulo, papilliforml 

 ornatis; ascis subcylindricis, 70-80:^10-14, subsessiiibus, copiose 

 paraphysatis ; sporidiis octonis, distichis, oblongo-cyiindraceis, 16- 



20 s 5-6, luteis, primo binucieatis, dein uniseptatis, ad septum vix 

 constrictis. 



Hab. in caulibus vivis Smiiacis, Fiorida Amer. bor. 



23. Dimerosporium erysiplioides E. et E. Journ. Myc. 1888, p. 121. 



— Amphigenum; peritheciis sparsis, astomis, giobosis, 100-115 u.. 

 diam., myceiio parco ex hyphis gracilibus, brunneis, ramosis efibr- 

 raato, appendicibus 15-20, brevibus, expansis, 30-40 c; 3, plerum- 

 que 1-o-septalis, brunneis, apice imperfecte bilobis ; ascis oblongis, 

 subsessilibus, 35-40 zi 12-14 (paraphysibus?); sporidiis distichis, acu- 

 te ellipsoideis, i-septatis, constrictis, locuiis magne uninucleatis, 

 15-18 w 6-7, 



//a^. ad folia emortua Cynodontis Da cty ii, St. Martinsvil- 

 le Amer. bor. — Adsuat perithecia (sperraogoiiia ?) minora^exap- 

 pendiculata, sporulis paucis, globosis, brunneolis, 4-5 u. diara. in- 

 structa. 



24. Dimerosporium ? dubiosum Speg. Fung. Guar. Puigg. I, n. 170. 



— Epiphyllum; mycelio foliorum epiderraidi arcte adnato ac raa- 

 culas subdefinitas, ellipticas (longitudinales), parvulas, 1-3:^0,5-1 

 ram., laxe hinc inde gregarias, rarissime confluentes efficiente; 

 crustaceo-puberulo atro, compactiusculo, e fibris iongiusculis, dense 

 ramoso-intertextis, subgraciiibus, 4-5 u.. crassis, derisiuscule septa- 

 tis, testaceis composito; peritheciis in raaculis dense 8-15-aggrega- 

 tis, globosis, parvulis, 120-130 a. diam., atris, astomis C?), pilis 

 brevibus, 20-30 ;; 5-8, dense crasseque septatis, apice obtusis ac 

 sjsepe incurvis, testaceis vestitis, contextu indistincte spongioso-co- 

 riacello, rufo-fuligineo, subopaco; ascis cylindraceis, 78-100-6-7, 



1716 



