PHAEODICTYAE— SCOLECOSPORAE 37 



i. Wall of perithecium double 



Scleroplea 16: 548 

 (s) Spores compressed, flattened 

 h. Perithecia smooth Clathrospora 9: 894 



i. Perithecia hairy *Comoclathris 



(n) Spores appendaged at both ends 



Delacourea 2: 288 

 n. Perithecia setose, especially about ostiole 



Pyrenophora 2: 277 

 (2) Perithecia in a phyllogenous pseudostroma 



Isothea 2: 290 

 2. Perithecia superficial 



a. Phytogenous 



(1) Perithecia soft, light colored Winteria 14:589 



(2) Perithecia carbonous, black 



(a) Perithecia corrugate-tuberculate 



Crotonocarpia 2: 306 



(b) Perithecia not corrugate 



x. Perithecia glabrous Tichospora 2: 290 



y. Perithecia hairy Pleosphaeria 2: 304 



b. Fimicole; each spore of 3 10-celled chains 



Pleophragmia 2: 307 



II. Perithecia cespitose Cucurbitaria 2: 307 



III. Perithecia in a stroma 



1. Spores with a mucous layer Montagnula 14: 603 



2. Spores without a mucous layer 



a. Stroma effuse, eutypeous Thyridium 2: 323 



b. Stroma valsous Fenestella 2: 325 



Scolecosporae 



2: 337, 9: 923, 11: 351, 14: 613, 16: 557, 17: 767 



Spores linear or filiform, continuous or septate, hyaline or yellowish. 



I. Perithecia separate 



1. Perithecia covered or erumpent 



a. Perithecia covered by a phyllogenous clypeus 



Linospora 2: 354 



b. Perithecia not covered by a clypeus 



(1) Perithecia beaked Ophiognomonia 17: 776 



(2) Perithecia not beaked 

 (a) Perithecia glabrous 



x. Spores muticate 



(x) Spores in a hyaline sheath Ophiomassaria 11: 353 

 (y) Spores not in a hyaline sheath 

 m. Perithecia globose to conoid 



Ophiobolus 2: 337 

 n. Perithecia cylindric, truncate 



Cylindrina A: 421, 9: 937 

 y. Spores awned at each end 



