D 
(e mutua pressione). Asci 8-spori lineari-clavati, paraphysibus 
obvallati. Sporidia Hypoxylorum, elliptico-oblonga, saturate 
fuligineo-badıa, opaca, simplicia monoblasta. — Stroma jam 
primitus immarginatum, fibrosum, cellulis nempe elongatis pa- 
chydermatieis porreetis eoalescentihus, luscellis vel albicautibus, 
aliis brevioribus subeontortis, saturate luligineis, stratose alter- 
nantibus, exinde stroma longitudinaliter sectum trausverse vit- 
tatum. — Hierher gehören Sphæria concentrica und vernicosa 
Schwein. 
Hypoxylon Fr. Summ. 
Diatrype (Fr. Summ ex p.). Genus emend. Pyrenia 
stromate det rminato (plus minus verrucæformi) corticato, erum- 
pente, basi cubilibus innato, vel cubilia subigente excepta, 
conferta, verticalia, ovoidea, brivicolla, ostiolo papillari, inter- 
dum figurato, erumpente pradita. Ascı clavati, in basim elon- 
gatam atlenuati, facile dillluentes, 8 — pleiospori, paraphysibus 
ro more obvallati,. Sporidia in seclione 8-spora majora — 
in poly«poris minuta, spermatioidea-cylindracea, sapius curvula, 
polis obtusiuscalis hyalina, simplicia, subinde nucleolo, vel nu- 
eleis exiguis polaribus mobilibus instructa. — Die Arten dieſer 
Gattung zerfallen in 2 Sectionen: a) Ascis oclosporis (Sph. 
bullata, undulata, stigma, diseilormis ete., und b) aseis polys- 
poris (Sph. favacea, verrucklormis Auct. ex p., quercina elc.). 
Melogramma Fr. Summ. (Sporidia fusoidea, plus minusve 
elongata A—6-locularia sæpius curvula pallide fuscescentia). 
Ascoxyta Libert ex p. (Sph. quercina Fr. Selerom). 
Aglaospora De N. Microm. ital. (Sph. profusa Fr.). 
Rabenhorstia Fr. Summ. ex p. (Sph. Tilie Pers.). 
Valsaria Ges. et De N. ift der Valsa im Allgemeinen 
gleich, unterfcheidet ſich aber durch sporidia didyma seu bilocularia. 
(Sph. insitiva Tode, donacina Fr., decorticans Fr.). 
Pseudovalsa Ces, et De N. von Valsa durch sporidia ampla 
plurilocularia verſchieden (Sph. lanciformis, stilbostoma ete.). 
Valea Ces, et De N. (Valse et Endothie spec. Fr. 
Summ.). Pyrenia circinnantia, rostrata, vulgo immersa, rarius 
superficialia vel nuda, stromate cum matrice confuso vel magis 
determinato excepta, sœpius disco stromatico papilleformi, imo 
producta et spiniformia. Asci tenues, 4-8-spori, sporidia sper- 
matioidea ut in Diatrypes. (Endothia radıcalis Fr., Sph. pul- 
chella, quaternata, stellulata, nivea, leucostoma, salicina, Mi- 
crostoma vulgare Awd.). 
Euvalsa? Pyrenia conferta, cireinnantia, subiculo fibroso- 
fusco insidentia, nuda, pachypleura, coriacea, atra, astoma, 
globosa vel elongata, superficie, in sicco, corrugata. Asci 
innumeri, minuli, e basi longe attenuata, obovati, vel obovato 
apice atlenuati, sporidia innumera foventes. Sporidia spermati- 
