662 Sphseriaceae, Hyalodidymae, Diaporthe. 



III. Tetrastaga Nits.: peritheciis gregariis, cortice immutato vel deniqne 

 ivtro-maculato imraersis, intus saepius linea nigra limitatis. (Ktym. fetra, 

 quatuor et stagon, gutta, ob sporidia saipissime 4-guttata). 



A) Arboricolce et fruticicoloi. 



lOL D. Tetrastaga rudis (Fr.) Nits. Pyr. Gerra. p. 282, Sphceyna 2543 

 rudis Fr. Eleucli. II, p. 98, Aglaospora rudis Tul. Carp. II, p. 

 165, Hercospora rudis Auersw. — Stroinate nunc late eflfuso, ra- 

 mos ramulosque ambiente, nunc contra et quidem saepius brevi, 

 maculas sistente orbiculares, ovales v. irregulares, approximatas 

 V. confluentes ; ligni corticisque substantia vix tandem expallescente 

 nigrolimitata, corticisque interioris superficie tandem sordide ni- 

 gricante v. lineata; peritheciis globosis. cortici interiori plus minus 

 alte iramersis, ordine vario sparsis, collo ostioloque tenui, cylin- 

 drico breviterque exserto instructis; ascis clavatis v. oblongis, basi 

 breviter attenuatis, octosporis, 62-70 ;; 8; sporidiis subdistichis, fu- 

 siformibus, plerumque obtusiusculis, rectis v. parum curvatis, hya- 

 linis, medio parum constrictis v. torosis, bicellularibus, quadrigut- 

 tatis, 14-16::; 4. — Spermogonia phomatoidea: spermatiis 6-7 :; 2, 

 biguttatis; basidiis hamatis, 21-30^1,3. 



Hab. in ramis Cytisi Laburni et C. nigricantis emor- 

 tuis in Germania, Italia, Gallia. 



192. D. Tetrastaga ligulata Nits. Pyr. Germ. p. 291. — Stromate 2544 

 effuso, ambitu et raagnitudine maxirne vario sed plerumque brevi, 

 substrato toto immerso, strato nigricante, in lignum alte descen- 

 dente undique circumscripto ; peritheciis rainutis, globosis v. parura 

 depressis, corticis strato infimo v. ligno supposito ipso impositis, 

 ordine valde inaequali sed plerumque laxe sparsis, hinc inde tamen 

 densius congestis, tunc ssepe tractu lineari dispositis, in collum bre- 

 vissimum v. parum elongatum abrupte attenuatis; ostiolis in ple- 

 risque longissime exsertis, tenuissimis, cylindricis v. saepius aT la- 

 tere corapressis, ligulatis, flexuosis v. secundis, raro abbreviatis, 

 corticom perforatura parum tantum superantibus ; ascis anguste 

 clavatis v. fusiformibus, octosporis, 60:^9-10; sporidiis subdisti- 

 chis, fusiformihus v. subcylindricis, utrinque obtusiusculis, rectis 

 V. inaequilateralibus, bicellularibus, bi-quadriguttatis, medio parum 

 constrictis, hyalinis v. pallide lutescentibus, 12-13;; 4. 



Hab. in ramis Tllicis europaei prope Munster Germanise et 

 prope Saintes Galliae (Brunaud). — Forma galhca dignoscitur : 



