284 



FUNG US- FLORA. 



Sclerotinia bulborum. Behm, Krypt.-Flora, Disc, 

 p. 819; Sacc, Syll., viii. n. 802; Mass., in Gard. Chron., 

 Aug. 11th, 1894, p. 1894, with fig. 



Ascophores 1-3 in number, springing from an irregular 

 sclerotium which is at first white, then blackish externally, 



Fig. 1, Sclerotinia bulborum, Relim, x 10 ; — Fig. 2, ascus and paraphysis 

 of same, X 400; — Fig. 3, section of portion of a sclerotium, x 400; — 

 Fig. 4, Botrytis form of the fungus, x 250 ; — Fig. 5, conidia of Botrytis 

 stage, x 400. 



8-12 mm. diameter; ascophore stipitate, at first closed, then 

 hemispherical, or sometimes more expanded, brown, glabrous, 

 3-5 /x; stem slender, almost cylindrical, smooth, brown, 

 10-15 mm. long; excipulum and hypothecium formed of 

 slender, interwoven hyphae; asci narrowly cylindrical, 



