714 Sphaeriaceas, Phaeodidymae, Didymosphaeria. 



lipticis, utrinque obtusissiinis, uiiiseptatis, leniter constrictis 12-13 

 •).. lougis. 



llab. in ramulis eraortuis Corni, Spye Park Britanniae. Epi- 

 dermis supra perithecia subinde decolorata. Paraphyses lineares, 

 interdum sporidium unum alterumve gereiites. Didi/mosphceria 

 oblitescens Fuck. alieiia est et sub nomine Dydimelkv vexatcF jam 

 descripsi. 



50. Didymosphaeria acerina Rehm Ascom. n. 237 (1874) et in Hedwi- iOv\n 

 gia 187'.», p. 1(38. Massariopsis subtecta Niessl (1875) in Notizen 



p. 3'.*. — Peritheciis in cortice suberoso nidulantibus globulosis, 1 

 mill. circ. diam., gregariis, ostiolis peridermium superficie leniter 

 cinereo-nigrificatum punctulato-perforantibus, leniterque pustula- 

 tim elevantibus; ascis cylindraceis, crassis, 100-120^8, apice in- 

 crassato jodoque coerulescente; sporidiis monostichis, oblongis, uni- 

 .septatis, utrinque obtusis, non v. vix constrictis, binucleatis, fuscis, 

 14-17^:5-7,5; paraphysibus articulatis subramosis. 



Hab. in ramis Aceris campestris et Pruni spinosae in 

 Germania, Helvetia, Austria et Britannia. — Var. Fraxini Wint. 

 herb. (vix diversa). In ramis Fraxini pr. Leipzig Germaniai. 



51. Didymosphaeria pulchella Sacc. et Sp. Mich. I, p. 375. — Peri- 2r,.M 

 theciis globulosis, ultra ^J.y mill. diam,, papillatis, initio subcuta- 

 neis ; ascis cylineraceis, 100-150 ;; 10-13 apice obtusis, lumine trun- 

 cato minuteque 1-foveolato, paraphysibus filiformibus obvallatis, 

 octosporis; sporidiis monostichis v. partim distichis, oblongis, con- 

 stricto-1-septatis, 20 =; 8, olivaceo-fuligineis. 



Hab. in ramulis sub cortice denigratis Aceris Negundinis. 

 Conegliano, Ital, bor. — Ab affini Did. aceriiia certe distinguenda. 



52. Didymosphaeria grumata (Cooke) Rehm Ascom. n. 441. Sphceria 2695 

 griimata C. et Ellis N. Am. Fungi n. 185. — Peritheciis hinc indo 

 gregariis epidermide tumidula et nigrificata tectis, globosis, y^ mill. 

 diam., obtuse papillatis, nigris; ascis clavatis, 120:^15, paraphy- 

 .sibus ramosis obvallatis, octosporis; sporidiis ovoideo-clavulatis 1- 

 septatis, demum constrictis, 2-4-guttatis, diu hyalinis, demum (te- 



ste Rehm; dilute fuligineis, strato mucoso 3 a. cr. obductis, 21 ^8, 

 monostichis v. subdistichis. 



Hab. in ramis adhuc vivis Andromedae ligustrina?. New 

 Jersey Amer. bor. 



53. DidymosphaBria Nubecula Pass. Micr, ital. Diagn. n. 11. — Pe- 2696 

 ritheciib gregariis, rainutis, immersis tectis, nubeculas griseo-fu- 

 scas, subdisciformes efficientibus. vel sparsis ; ascis cylindricis sub- 



