384 PLANT DISEASES 



dendroidly branched upwards, subcontinuous, branchlets 

 spreading, tips dilated, toothed ; conidia crowded in heads, 

 ovoi'd, subhyaline, 9 X 6 /t. Minute black sclerotia are 

 formed in the parts attacked. Ascigerous stage un- 

 known. 



Peziza, Dill. — Ascophore sessile, fleshy, brittle, closed 

 at first, gradually expanding, often until quite flat, or even 

 recurved, externally warted or scurfy ; flesh composed of 

 large polygonal cells ; asci cylindrical, 8-spored ; spores in 

 I row in the ascus, hyaline, elliptical, continuous; para- 

 physes present. 



Peziza vesiculosa. Ball. — Clustered, fragile, globose, and 

 closed at first, gradually expanding, disc pale brown, exter- 

 nally brownish, granular, whitish downy towards the base, 

 1-2 in. across ; tissue parenchymatous, cells irregularly 

 polygonal, large ; asci cylindrical, 8-spored, spores in one 

 row, smooth, hyaline, bluntly eUiptical, 21-24x11-12 /j. ; 

 paraphyses septate, clavate. Conidial stage {=Oedo- 

 cephalum fimetarium, Reiss) white, with erect fertile hyphae 

 having the apex globose and studded with very delicate 

 spicules, from which the conidia spring and form a dense 

 head. Conidia hyaline, continuous, obovate, 8-10 X 



3-4 Z^- 



Bulgaria, Fries. — -Ascophore more or less gelatinous, 

 erumpent, at first closed, the disc gradually expanding and 

 becoming plane, narrowed into a short, thick, stemlike 

 base ; asci narrowly clavate, 4-8 spored ; spores in one row 

 in the ascus, continuous, brown ; paraphyses slender, tips 

 curved. 



Bulgaria polymorpha, Wettst. — Gregarious or clustered, 

 bursting through the matrix as a rusty-brown, scurfy knob, 



