108 
Promont. bonae spei: Grahamstown in foliis vivis Barosmae 
scopariae Eckl. et Zeyh. Julio 1876. (no. 1260.) 
leg. Prof. P. Mac Owan. 
Erysiphe gigantiascus Sorok, et Thüm, — Mye. univ. no. 645, 
E. caules ambiens et plus minusve turgescens, mycelio fere 
defiiciens, alligato; peritheciis globosis, congestis, grumosis, brun- 
neis, mediis; appendieulis fuscis, longis, subnodosis, minime vel 
non divisis, pellucidis, simplieibus, illis E. communis proximis; 
ascis late-ovoideis, vertice rotundato, hasi subangustato, truncato, 
108—120 mm. long., 70 mm. crass., episporio laevi, conformi, 
4 mm. crass., vertice minime incrassato, hyalinis, 4—8 sporis; 
sporidiis elliptieis. utrinque rotundatis, 25 mm. long., 16 mm. 
crass., hyalinis. 
Rossia: Kazan in horto botanico ad caules vivos Euphorbiae 
platyphyllae Lin. et E. duleis Lin. Aest. 1876. 
leg. Prof, Sorokin. 
Erysiphella Peck. nov. gen. in XXVII, Rep. of New-York. 
State Museum p. 68. 
Appendices verae peritheciorum nullae; sporae definitae. — 
Genus a Perisporio Fr. sporis definitis, ab Erysiphe Lev. etc. 
defeetu appendicum differt. 
Erysiphella aggregata Peck. 1. c. 
f. autumnalis. — Myc. univ. no. 753. 
E. mycelio arachnoideo, effuso, albido; peritheciis abun- 
dantibus, confertis, subglobosis, glabris, badiis vel nigris; ascis 
plerumque 10—12, oblongo-ovatis vel eliam subelavalis; sporis 
8, late elliptieis; 0°0008—0°0009 unc. long., 0:0005—0:0006 une. 
crass. 
America septentr.: Albany — New-York — ad amenta 
feminea Alni serrulatae Ait. Vere 1876. leg. C. H. Peck. 
Erysiphella aggregata Peck. 
f. vernalis. — Myc. univ. no. 754. 
Sphaerella indistineta Peck. — Myc. univ. no. 759, 
S. peritheciis minutis, innatis, vix prominulis, sparsis vel 
subgregariis, globosis, nigris; ascis subeylindrieis. 00014—0°0018 
unc. long., sporidiis confertis, elongatis, subeylindraceis, hyalinis, 
‚simplieibus vel obseure uniseptatis, saepe curvulis, 00001— 00011. 
unc. long. 
America septentr.: Albany — New-York — in frondibus 
emortuis Pteridis aquilianae Lin. Junio 1876. 
leg. C. H. Peck. 
