172 THE JOUllXAL OF BOTANY 



emerges at a distinct distance from tlie p^'^cnidium or disc which 

 occupies tlie centre. For the Gijtospora, see no. 32G. 



379. Phomatospora Sphaerulina, sp. n. 



Spermogonium— Pycnidiis vere phomatoideis, pariete 1-2 celhi- 

 larmn crassitudine, subglol)osis, brunneis, parenchjmaticis, 120-200 /^ 

 diani., epidermide tectis, dein erumpentibus. Sporulis iis Phonue 

 herhanim similibus, copiosis, oblongo-ovalibus, utrin(]ue rotundatis, 

 biguttulatis, 5-8 X 3 /x, muco tenui obvolutis. 



Status ascopliorus — Peritheciis p^^cnidiis subsimilibus, sed ple- 

 ramque obscurioribus. Ascis vehit in Bplicenilina ahhreviata fasci- 

 culatis, junioribus oblongis, 20-25 X 10-12 /j, apice rotundatis, basi 

 obtuse sessilibus, superne tunica crassissima alte unifoveolata in- 

 structis, maturis oblongo-cylindricis, ca. 90 x7 /a, superne tenuissime 

 tunicatis. Sporidiis oblique uniseriatis, ovalibus, primo utrinque 

 rotundatis, dein quasi fusoideo-attenuatis, continuis, hyalinis, 12- 

 15 X 5 /u. 



JTah. in stipitibus emortuis Asclepiadis incarnutcv^ in Horto 

 botanico, Edgbaston, Mart., 1921. Perithecia confertim p3'cnidiis 

 intermixta, subinde ambobus generibus sporarum in eodeni conce]>ta- 

 culo inchisis. 



380. Didymella Cortadenise, sp. n. 



Status pycnidicus — Pycnidiis ])eritheciorum simillimis et con- 

 junctissime intermixtis, etsi interdum ma joribus. Sporulis copiosis, 

 i'usoideis, utrinque acutis, hyalinis, eguttulatis, crassiuscule tunicatis, 

 subinde pseudo-uniseptatis (?), 11-12 x 2^7-3 /x. 



Status ascopliorus — Peritheciis longitudinem secus folii in serias 

 longas digestis, atris, subglobosis, 200-250^ diam., membranaceis, 

 tectis, epidermide supra verticem poro rotundo latiuscule pertusa ; 

 contextu tenui laxe parenchymatico umbrino. Ascis cLivato-cylin- 

 dricis, paraphysibus parcis deliquescentibus cinetis, ca. 70-75 X 10 /ix ; 

 sporidiis sul)fusoideis, basi magis attenuatis, biseriatis, plane 1-sep- 

 tatis, hyalinis, eguttulatis, 15-20 X 4-5 ^x. 



Hah. in foliis emortuis Cortadenice {Gi/nerii) arge]ite(S,Tl\x\\i<d\'- 

 ston, Ayrshire (Bo^-d). Aug. 



Immature asci were found among the p3^cnospores, in the pj'-cnidia. 

 In some of the perithecia (but not in asci) were larger 3-septate 

 spores, about 32 x 9 i.i, with thicker walls ; these were apparently 

 stylospores. 



'381. DiDVMELLA CULMTGENA Sacc. Syll. i. 558, Fung. Ital. 

 pi. 309. 



f. endorliodia f. no v. Peritheciis gregariis, epidermide tectis, 

 globoso-lentiformibus, demum collapsis, poro pertusis, atro-brunneis, 

 basi hyphis brunneo-fuligineis cinetis, ca. 200 /x diam.; contextu 

 rufo-brunneo, crasso, parenchymatico. Ascis clavatis, apice parum 

 attenuatis, 50-GO X 8 ^t ; ])araphysibus nuUis visis ; nucleo amame 

 rubescente. Sporidiis distichis, fusiformibus, utrinque acutis, raro 

 cui'vulis, 1-4-roseo-guttulatis, postremo 1-septatis, non constrictis, 

 hyalinis, 14-18x2^-3^//. 



Hah. ad basin culmorum et in vaginis Cynosuri cristafi. Hop- 

 wood, prope Birmingham. A])r. 



The colour of the contents of the perithecium is due to a pinkish 



