— 93 — 



2 centralibiis, septo altero \'erticali divisis (rarissime 



deficiente), liyalina. 

 Hab. Ad foiia vaginasque Poae Forsteri prope Port 



Cook in Staten islayid, Mart. 1882. 

 Obs. Species ob maculas pulchras carneo-aurantias super- 



ficem internam vaginarum latiuscule ambieutes di- 



stinctissima. 



248. Pleospora antarctica Speg. (n. sp.) 



Diag. Perithecia matrice nigrificata immersa v. semiim- 

 mersa, epidermide velata e globoso conoidea (180-200 

 [j.) atra glabra coriacella crassiuscula, contextu oli- 

 vaceo parum distincto, ostiolo acutiusculo brevi coro- 

 nata; asci cylindracei antice rotundato-subtruncati non 

 V. vix crassiuscule tunicati non foveolati, postice bre- 

 vissime crasseque attenuato-stipitati (80-90 X 10-14 [x), 

 parcissime paraphysati, octospori, sporidia oblique mo- 

 nosticha v. recte disticha, elliptico-subfusoidea, utrin- 

 que acute obtusata (20-25 X 5-6 \j},, inaequilateralia v, 

 subcurvula, horizontaliter 7-(rarius 3-5-) septata, ad 

 septa ( medio validius ) leniter constrictula, loculis 4 

 (rarius 8) internis septo altero verticali divisis^ dilute 

 olivacea, loculis extimis pallidioribus. 



Hah. In culmis putrescentibus graminacearum prope 

 Shammacus, Maj. 1882. 



249. Pleospora freticola Speg. — Fung. pat. n. 147. 

 Hab. In scapo putrescente Culcidii magellanici prope 



Wallamatu, Maj. 1882. 



250. Pleospora petntamera Karst. — Sacc, Syll. 11, p. 266. 

 Hab. Non rara in foliis Phlaei antarctici et Luzulae 



prope Ushuvaia, Maj. 1882. 

 Obs. Sporidia elliptica v. ovoidea 4-septala (25 X 11 [x) 

 constrictula utrinque obtusa pallidissime mellea. 



