82 



SPHAERIALES 



2. Perithecia with a stroma 



a. Stroma stipitate, or arising from a sclerotium 



or pseudosclerotium 



(1) Stroma from a sclerotium or sclerotium- 



like body 



(a) True sclerotium, consisting solely of 



hyphae 



(b) Pseudosclerotium, consisting of host- 



cells and hyphae 



(2) Stroma without sclerotium, typically stipi- 



tate; on insects or fungi 



b. Stroma not stipitate, without sclerotium, pul- 



vinate to effuse, or lanceolate 



(1) Stroma lanceolate, in inflorescences of 



bamboo 



(2) Stroma globose to pulvinate 



(a) Perithecia superficial, the stroma ap- 



pearing to be spiny 



(b) Perithecia imbedded in the stroma 



m. Perithecia over entire surface of stroma 

 n. Perithecia limited to a portion of the 

 stroma 

 (m) Perithecia scattered around periph- 

 ery; paraphyses present 

 (n) Perithecia in a band or zone; paraph- 

 yses lacking 

 r. Perithecia in a median band, stroma 



sterile above and below 

 s. Perithecia in a superior zone, stroma 

 sterile below 



(3) Stroma eflfuse 



(a) Stroma bright-colored, encircling stems 



(b) Stroma black, not encircling stems 



Claviceps 2:564; 16 

 Balansia 9:997 

 Cordyceps 2:566; 16 



Mitosporium 24:701 



Echinodothis 17:819 

 Hypocrella 2:579 



Dussiella 9:1004 



Mycomalus 16:604 



Ascopolyporus 16:605 



Epichloe 2:578; 16 

 Dothichloe 



Phaeoscoleciae 

 Spores dark, usually brown 



A. Perithecia hairy, superficial, on a buff mycelium Borenquenia 24:702 



B. Perithecia immersed in a black stroma; spores 



dilabent Konradia 16:605 



Family 28. LOPHIOSTOMACEAE 



2:672, 9:1074, 11:382, 14:702, 16:650, 17:886, 22:546, 24:1106 



Perithecia innate, then becoming more or less erumpent, rarely superficial, simple 

 and separate, very rarely stromate, though the matrix is often blackened and 

 sometimes gives the appearance of a stroma, wall typically carbonous, black, with 

 a massive compressed ostiole, opening by a very narrow cleft; asci clavate- 

 cylindric, usually 8-spored, typically paraphysate; spores various. 



The genera of this family are derived directly from Sphaeriaceae by hyper- 

 trophy of the ostiole, the compression of the latter producing a slit-like opening. 

 In spite of this, they appear to have no close relation to the Hysteriaceae. 



Hyalosporae 

 (Not represented) 



