MILDEWS AND RELATED FUNGI 



159 



shield-shaped, unappendaged, black, membranous to carbonous 

 formed of radiating chains of cells. The asci are four- to eight-spored , 

 short and associated with paraphyses. Two fungi which attack the 

 cofifee plant are the most important pathogenic species of the family: 



Fig. 55. — A-D, Nectria cinnabarina. A, Stroma of conidia and fruit-bodies of 

 fungus; B, stroma in section; C, ascus; D, mycelium with conidiospores; E, F, Neclria 

 dilissima; F, conidia layer; G, H, Nectria sinaplica; G, ascus; H, pycnidia-like layer. 

 J, Nectria inaiirita; K, Neclria oropensoides coremium. {See Die natiirlichen Pflanz- 

 enfamilien I. i, p. 35 7-) 



Scolecopeltis aeruginea and Microthyrium cofcB. There are twenty- 

 one genera, and more than 300 species not well understood. 



Suborder E. Pyrenomycetiinaee.— The mycelium is always present 

 in these fungi. The perithecia are either located upon the substratum, 



