Systematische Bearbeitung der Pyrenomycetengattung Lophiostoma ete. (p. 49) 93 
c) Species lignicolae sporis 4-cellularibus. 
29. EL. diminuens, Pers. 
Syn.: Sphaeria diminuens, Persoon, Syn. meth. fung. p. 57; — Crouan, Flor. du. 
Finist. p. 29. („Sur Peuplier et Crataegus*.) 
Lophiostoma viridaria, Cooke, Transact. Bot. Soc. vol. IX, 2. p. 328. c. icon. 
t. VI. f. 2. („Sporid. uniseriat., 3-sept., attenuat. towards each extremity, 
constrict. at the septa, brown, with a large nucleus in each cell. Length 
35 u. — On decorticat. twigs of Maple.) 
Lophiostoma oblongatum, Otth, Verz. schweiz. Pilze, n. 136. (,,Spor. brunneae, 
biseriat. aut subimbricat, oblong., obtus. aut acut., 4-locular., subtorulos., in 
quovis loculamento guttulam oleosam gerentes, long. 28— 31 u, crass. cire. 9 u. 
Cornus mascula“.) t 
Perithecia sparsa v. subgregaria, irregulariter atque inaequaliter ordi- 
nata, primo immersa, tecta v. ostiolis tantum emergentia, demum semiimmersa, 
media magnitudine, plerumque subrotunda, nigra, nucleo albido, ostiolis erum- 
pentibus v. prominulis, compressis, labiis in aciem acutam et plerumque 
arcuatam conniventibus, basi saepe angustioribus, nonnihil granulosa, altitudine 
duplo triplove longioribus instructa. 
Asci sparsi v. rarius substipati, elongato-clavati v. cylindrici, longe 
v. longissime pedicellati, subreeti v. parum curvati, membrana crassa strueti, 
octospori, maturi 175—270 u long. (pedicellum usque ad 60 u longum), 
13—18 u lat, paraphysibus numerosis, longissimis, tenuibus v. pertenuibus, 
filiformibus, unicellularibus, simplieibus v. raro ramosis superati. 
Sporae fusiformes v. rarius subeylindricae, obtusae v. obtusiusculae, 
rarius acutiusculae, nonnunquam inaequilaterales, plerumque isomerae, rectae 
v. parum curvatae, interdum nonnihil didymae ac parum anisomerae, primo 
2-cellulares, hyalinae, tandem constanter 4-cellulares, medio tantum nonnihil 
constrictae v. plus minus torulosae, plerumque guttulatae, dilute fuscescentes 
v. fuscae, semper zona distincta, hyalina circumdatae, oblique monostichae 
v. subdistichae, long. 30—45, crass. 8—13 u. 
Die von Cesati & De Notaris in ihrem „Schema di classificazione 
degli Sferiacei Italici aschigeri“ (p. 46) mit „Lophiostoma diminuens“ bezeich- 
nete Art gehört nicht hierher, sondern, wie später eingehender gezeigt werden 
Nova Acta L. Nr. 2. 13 
