42 THE JOURIVAL OF BOTAK^T 



NEW OR NOTEWORTHY FUNGI.— YII. 



Br W. B. Groye, M.A. 



(Plate 563.) 



(Continued from p. 17.) 



817 A. Dexdrophoma peuinosa f. Ligustri Strasser, in Annal. 

 Mycol. ix. 91. S^yliceria pruinosa Fr. Sj'st. Myc. ii. 486. 



Pvcnidia about \ mm. diam., subglobose, unilocular, surrounded 

 bv a thin Cyfosjyora-lWiQ wall, remaining long covered by the epi- 

 dermis, at length emerging by a black bullate ostiole ; contents dis- 

 tinctly olivaceous. Spores sausage-shaped, 6-7 X 1 ,a ; sporophores 

 up to 25 ^ long, repeatedly branched, occasionally in a verticillate 

 manner. 



On twigs of Ligiisfriim vidgare. Seamill and Stevenston, Ayr- 

 shire (Boyd). June, July. 



This is, I believe, really a Cytospora, but the specimens are too 

 poorly developed for certaint3\ Other species of Cytospora have 

 branched sporophores. It is said to be the spermogone of Valsa 

 Cypri Tul. ; see Ann. Sci. Nat. 1856, v. 116, and Sacc. Syll. i. 133. 

 Both Valsa Gypri and " Sj^hcvria pruinosa Fr." are known to occur 

 also on Fraxinus. Dr. J. W. Ellis found the var. LantancB on 

 Viburnum Opulus in Cheshire. 



318. Placosphaeria Ulmi, sp. n. 



Stromatibus rotundatis, convexis, nigrescentibus, cuticula tantum 

 tectis, crassis, intus atro-brunneis, iis DotliidellcB LI mi perfecte 

 habitu specieque similibus ; loculis plurimis, globosis, ostiolo leviter 

 exserto pertusis. Sporulis cylindrico-oblongis, utrinque rotundatis, 

 hvalinis, bi- vel pluriguttulatis, 17-25 X 4|-5 /x, sporophoris brevibus, 

 rectis, e totis loculi parietibus oriundis suffultis. (Fig. 11.) (Tab. 563. 



Hah. in foliis emortuis Ulmi campesiris. Southampton (Rayner 

 leo-it) ; Quinton (Ws.j in company with the Dotliidella, Oct. 1918. 



A transition-form between Piggotia astroidea and the Dotliidella ; 

 immature spores of the latter were found in the loculi of the Placo- 

 sphceria. No doubt overlooked on account of its similarity to tlie 

 Dotliidella. Of. FlacosphcBria graminis Sacc. & Roum. 



319. FusicoccuM cixcTUM Sacc. & Roum. Rel. Lib. iv. no. 94, 

 pi. 43. f. 23. Sacc. S}dl. iii. 249. Allesch. vi. 549. 



Stromata pulvinate, scattered or loosely gregarious, immersed, 

 erumpent only by the flat oval disc, dark-olive, sometimes surrounded 

 beneath the bark by a subolivaceous zone, falsely plurilocellate. 

 Spores oblong-fusoid, narrower towards the base, hyaline or faintly 

 granular, eguttulate, 14-18 X 3-4 jx ; sporophores rod-shaped, half as 

 long as the spore. (Fig. 4.) 



On dead twigs of Castanea saliva. West Kilbride, Ayrshire 

 (Bovd). Sept. Agreeing wdth Roum. Fung. Sel. Exs. no. 4377 ! 



The dark -olivaceous zone, surrounding the disc and faintly show- 

 ino' as a halo through the periderm, is not ahvays present. The dark 

 oval disc is placed longitudinally on the twigs. 



