STABBÄCK, ASCOMYCETEN 1). SOHWBD. CHACO-COBDILL-EXP. 21 



Mycosphserella. 



.1/. asunciensis Starb, hov. sp. Fig. 15. 



Perithecia epiphylla, epidermidem utriusque paginse paul- 

 lum pustulatim elevantia, ostiolis rimosim prominentia, aggre- 

 gat a et maculas orbiculares vel varie determinatas, 2 — 3 mm. 

 diam., obscuriores efformantia, minutissima, circa 150 |x diam. 

 Asci aparaphysati, cylindracei vel cylindraceo-obclavati, vel 

 fusiformes, sessiles, sursum incrassati, 100 — 127 x 12, t — 15 ij.. 

 Sporidia octona. irregulariter monosticha vel nonnulla disticha, 

 interdum inferiora conglobata, clavulata, sursum obtusa, 

 deorsum anguste vel fere caudatim attenuata, cauda interdum 

 paullum curvata, medio-septata, endoplasmate grumoso vel 

 guttulis quatuor ornat a, hyalina, 29 — 33 X 6 — 7 •->.. Spermo- 

 gonia peritheciis similia adsunt spermatiis numerosissimis, 

 bacillaribus, hyalinis. 6—8 x 1 — 2 [j. e basidiis filiformibus 

 19 — 25 x 1 — 2 ;x orientibus. Hab. : Paraguay. Asuncion, 



villa Morro in rara silva in foliis vivis Trichilise, 18 17 /7 93; 

 X:o 376 (Malmb.) -- Inter Mycospha?rellas sporidiis majoribus 

 M. elatiori Sacc. (Syll. T p. 495) affinis maculis autem et pe- 

 ritheciis parasitantibus nec non sporidiis valde differt. 



M. exarida Winter. 



Perithecia 75—100 ;j. diam. Asci 38—56x9—10 ;j.. Spo- 

 ridia 12 — 15x3—4 jJL. -- Hab.: Bolivia, Soururo inter Tarija 

 et Gran Chaco, in foliis vivis et arescentibus Serjaniae, 19 8 /3 02; 

 X:o 306. Specimina nostra maculis non elevatis, sporidiis 

 minoribus a ty po divergunt. 



M. pere.rigua Starb, nov. sp. Fig. 16. 



Perithecia numerosissima, caules totos nebulosim ambi- 

 entia, sparsim gregaria, interdum conferta, immersa, vix pro- 

 minula, globoso-lenticularia, poro minuto pertusa, textnra 

 membranacea, cellulis pro ratione magnis, polyedricis com- 

 posita, nigricantia, minutissima, 75 — 100 jj. diam. Asci octo- 

 spori, late obclavati, sursum detruncato-obtusi, late sessiles. 

 30 — 33 x 7,5 — 9 ;j.. Sporidia conglobata vel superiora disticha. 

 primo intra ascos qaadriguttulata, deinde medio-septata. 

 clavulata, hyalina, 12,5 — 43X3 — 3,5 [x. Paraphyses null*. 

 - Hab.: Bolivia, Tarija in caulibus Compositarum speciei; 



