208 PyrenOmycetsB, Sphseriacege, Acanthoa|igma. 



xissime gregariis, superficialibus, ex hemisplisBrico subconoideis 70- 

 125 [j-. diam., nigris, setulis radiantibus v. erectis, unicellularibus 

 fumosis 100-200 « 4-5 subdensiuscule armatis; ascis cylindraceis 

 brevissimeque pedicellatis, octosporis, aparaphysatis, 50-55*8-10; 

 sporidiis oblique distichis, rectis v. lenissime subinequilateralibus 

 utrinque acutiusculis 18-20 « 3-4, 3-septatis, ad septa leniter con- 

 strictis, primo byalinis serius obsolete fumosis. 



Hdb. ad folia viva Gnaphalii purpureiin pratis Ensenada 

 prope La Plata, Argentina, Amer. austr. 



2. Acanthostigma rubescens Rehm, Ann. Mycol. VII (1909) p. 636. 403 

 — Peritheciis in maculis hypophyllis late rosaceis dispersis, inter 

 pilos nidulantibus, folii conideo-globosis, imprimis versus apicem se- 



tis fuscis acutis, rectis, c. 30-40 [x. long. 3-4 \h. cr. obsessis, pa- 

 renchymatice e cellulis permagnis fuscis contextis, 100=^90; ascis 

 clavatis, ad apicem rotundatis, sessilibus, 46-48 « 8-9, octosporis 

 sporidiis fusiformibus, 3-5-septatis, hyalinis, 12-15*3, distichis; 

 paraphysibus filiformibus. 



Hdb. in foliis Solani hypoleuci, Sao Leopoldo Rio Gran- 

 de do Sul Brasilioe (Theissen). 



3. Acanthostlgma Lantanae Theiss., Beih. Bot. Centralbl. Bd. XXVII 403 

 (I9l0) Abt. II, pag. 397. — Maculis nullis; peritheciis in hypo- 

 phyllo numerosissimis dispersis, in epiphyllo rarioribus, globosis 



V. obovatis, inter pilos folii nidulantibus, grosse parenchymatice 

 contextis, 200-240 [i. diam., papilla obtusa, hyphis longis, fuscis, 

 flexuosis, septatis, 5-6 ji. crassis, hinc inde conidiferis obsitis; ascis 

 clavatis, modice pedicellatis, p. sp. 85-120 * 20-26, crasse tunica- 

 tis ; sporidiis oblongis, maturis intense viriclibus, 3-septatis, utrin- 

 que (imprimis apice infero) angustatis, ad septum medium con- 

 strictis, minus ad reliqua septa, uniguttulatis, polystichis, 32-45 

 >^ 8-9. 



Hah. in foliis vivis Lantan;u, Sao Leopoldo Rio G-rande do 

 Sul Brasilise (H. Dieckmann). 



4. Acanthostigma subnivale Rehm, Ann. Mycol. V (1907) p. 539. — 403: 

 Peritheciis gregariis sessilibus, globulosis, ad basim hyphis fusci- 

 dulis insidentibus, vertice setis plurimis, rectis, acutis, fuscis, 60 « 6, 

 vestitis, contextu parenchymatico, c. 300 [i. diam. ; ascis clavatis, 

 apice rotundatis, 70* 10-12, octosporis; sporidiis oblongo-clavatis, 

 utriuque rotundatis, transverse 3-septatis, medio subconstrictis, 

 hyahnis, 15*6, distichis; paraphysibus ramosis. 



Hdb. in hypophyllo folii Graminis inter Rhododendra 



