140 



THE FUNGI WHICH CAUSE PLANT DISEASE 



22 



S. linhartiana P. & D.^* is reported on quince in France. S. 



mespili Schell on medlar. S. seaveri, Rehm., comdia=Monilia 



seaveri, is on Prunus serotina.^'* 



S. padi Wor. is found on Prunus padus and Castanea." 



It possesses a Monilia-form conidial stage with typical dis- 



junctors, i. e., spindle-shaped cellulose bodies between the conidia 



which easily break across to facilitate the separation of the conidia. 



Fig. 95. — S. libertiana. Sclerotia produced in artificial cul- 

 ture. After Stevens and Hall. 



S. oxycocci Wor. is found on cranberry. It is unique in that 

 half of the spores in each ascus are larger than the others. The 

 conidial stage is a Monilia. 



S. fuckeliana (De Bary) Fcl.-' 



Apothecia in clusters of 2-3 from sclerotia in the leaves, rarely 

 in the fruits, of the host, yellowish-brown, 0.5-4 m across, stem 

 slender; ascospores 10-11 x 6-7 /x. 



Conidia (=Botrytis cinerea Pers., B. vulgaris Fr.). Conidio- 

 phores simple or branched, forming dense gray tufts; conidia sub- 

 globose, usually minutely apiculate, almost hyaline, 10-12 u 

 Fig. 94. 



