760 Hysteriaceae, Phaeophragmise, Mytilidion. 



sitis erumpentibus, elongatis, alte exsertis, rectis vel vix flexuosis, 

 apicibus obtusulis depressis, basi non vel vix coarctatis, semper 

 clausis, siccis coriaceo-durissimis, udis carnoso-tenacissimis, rinia 

 percursis, labiis semel intus revolutis, rotundato-tumidulis, dense 

 et grosse costato-sulcatis; ascis cylindraceis, sursura obtuse rotuu- 

 datis et crassiuscule tunicatis, deorsum brevissime ac abrupte atte- 

 nuato-stipitatis, 200-250 s 10-12, octosporis, paraphysibus filifor- 

 mibus, hyalinis, apice coalescenti-ramosis ac virescentibus obval- 

 latis, segreque visibilibus, sporidiis subrectis monostichis, elongato- 

 ellipticis, v. elliptico-subbiconicis, rnedio 1-septato-constrictis, utrin- 

 <jtie acutiuscule rotundatis, 20-30-7-9, loculis primo simplicibu3 

 dein 1-pseudo-septatis, hyaiinis; (an dein vere 3-septatis, fuligi- 

 neisque?). 



Hab. ad cortices lichenibus tectos, Faxina, Brasilia meridionali, 

 (Doct. PuiGaARi). — Odor peculiaris licheninus; Jodi ope tunica 

 ascorum dilute coerulescit, apice paraphysum intense virescenti-coe- 

 rulescunt. Species mox distinguenda! 



BAGGEA Auersw. Hedw. 1866, p. 1 et 1868, t. 1, f. 9. (Etym. a 

 Cl. Bagge, collectore botanico). — Perithecia erumpentia elongata, 

 miuuta, coriaceo-membranacea, atra, rima lineari. dehiscentia. Asci 

 paraphysati, breviusculi, polyspori. Sporidia elongata, 3-septata, 

 dein fuscescentia. 



1. Baggea pachyasca Auersw. 1. c. Rehm. Ascorm n. 28. — Peri- 5700 

 lh( j ciis generis, laxe paraliele seriatis, l / 3 miil. long., l / 8 mill. vix 

 cr,; ascis oblongo-ovatis, 70 s 21-24, subsessilibus, paraphysibus 

 ramulosis obvallatis, sub-100-sporis; sporidiis polystichis elonga- 

 tis, obtusis, curvulis, 3-septatis, 14-18 s 3, hyalinis, dein brunueolis. 

 Hab. in ramis decorticatis, emortuis sed adhuc stantibus 

 Quercuum, Frankfurth, Windslieim, Sugenheim etc. Germaniae. 



MYTILIDION Duby Hyster. p. 62, [sub nom. mendoso Mytilinidion]. 

 (Etyrn. dimin. a mylilos, genus parvse conchae). Lophium Karst. 

 Myc. Fenn. II, p. 245, nec Fr. — Perithecia emerso-superficialia, 

 liberata, verticalia, compressa, tenui-carbonacea, fragilia, labiis 

 acutissimis arcte conniventibus. Asci paraphysatt, octospori. Spori- 

 dia oblonga, eiongata, 3-pluri-septata, rarius (in subg. Bulliar- 

 della) 1-septata, tiavescentia. 



I. Eu-Mytilidion: sporidiis 3-pluriseptatis. 

 1. Mytilidion aggregatum (DC.) Duby Hyst. pag. 22, tab. 1, fig. 3, 5701 



