280 FUNGUS-FLORA. 



cal, apex blunt, pedicel elongated, tapering, 8-spored ; spores 

 obliquely 1-seriate, hyaline, continuous, elliptical, ends 

 obtuse, often 2-guttulate, 15-18 x 6-7 p.; paraphyses hya- 

 line, septate, slightly thickened upwards. 



Octospora tuberosa, Hedwig, Muse. Frond., ii. p. 33, t. x. 

 fig. B. 



Hymenoscypha tuberosa, Phil., Brit. Disc., p. 113. 



In woods. 



The sclerotium is attached to the rhizome of Anemone 

 nemorosa. 



According to Tulasne Ann. Sci. Nat., ser. iii., vol. xx. 

 p. 175, and Sel., Fung. Oarpol., vol. iii. t. 22, figs. 6 and 7 

 the spores germinate readily when placed in a nutrient solu- 

 tion, and produce either one or more germ-tubes, which bear 

 minute, globose conidia at the tips of short, conical branches, 

 or sometimes the conidia are produced without the inter- 

 vention of hyphae, at the ends of the spores in small groups. 

 The spores usually become septate, and change in form 

 during germination. 



Specimens examined in Cooke, Fung. Brit,, n. 558; Kehm, 

 Ascom., n. 202; and Berk., Brit. Fung., n. 153. 



Sclerotinia sclerotiorum. Mass. 



Solitary or 2-4, springing from a black, usually elongated 

 sclerotium, 1-2 cm. long ; ascophore at first small and closed, 

 then funnel-shaped, finally plane or slightly convex, margin 

 entire, glabrous, thin, rather firm, pale brown, 3-7 mm. 

 broad ; stem slender, often more or less wavy, smooth, pale 

 brown, 1-3 cm. long; hypothecium and excipulum formed 

 of slender, interwoven hyphae; asci narrowly cylindrical, 

 elongated, 8-spored ; spores obliquely 1-seriate, hyaline, con- 

 tinuous, elliptical, sometimes slightly oblique, usually 2-gut- 

 tulate, 9-13 X 4-6 /z; paraphyses slender, very slightly 

 thickened upwards. 



Peziza sclerotiorum, Libert, Crypt. Ard., n. 326. 



Sclerotinia libertiana, Fuckel, Symb. Myc., p. 331 ; Eehm, 

 Krypt.-Flora, Disc., p. 816; Sacc., Syll., viii. n. 798. 



Hymenoscypha sderotiorum, Phil., Brit. Disc., p. 115. 



Peziza postuma, Berk. & Wils., Gard. Chron., Sept. 1883. 



Growing from sclerotia formed in the stems of potato, cab- 

 bage, beet, Arc. 



