22 Charles E. Bessey 



Family 7, Sordariaceae. Simple; perithecia soft, brown or 

 black, with or without a stroma; mostly coprophilous. Sordaria, 

 Sporormia. (Pf. I, i, 390.) 



Family 8. Chaetomiaceae. Simple; perithecia superficial, free, 

 brown, and fragile, generally bristly, on a superficial mycelium. 

 Chaetomium. (Pf. I, i, 387.) 



Family 9. Sphaeriaceae. Simple, perithecia superficial, free, 

 or more or less sunken in the stroma, globular or flattish. Trich- 

 osphaeria, Lasiosphaeria, Chaetosphaeria. (Pf. I, i, 394.) 



Family 10. Ceratostomataceae. Simple; the perithecia more 

 or less prolonged into a tubular ostiole. Ccratostomella, Ccrat- 

 ostomo. (Pf. I, I, 405.) 



Family 11. Cucurbitariaceae. Perithecia clustered, sometimes 

 united into a compound ascigeious mass, hard, woody or leathery, 

 black or brown. Nitschkia, Cucnrbitaria. (Pf. I, i, 408.) 



Family 12, Amphisphaeriaceae, Perithecia, either closely ad- 

 nate, or somewhat sunken into the matrix ; generally hard and 

 carbonaceous, ostiole papilliform. Amphisphaeria, Strickeria. 



(Pf. I, I, 4I3-) 



Family 13. Lophiostomataceae. Perithecia scattered, gener- 

 ally more or less buried in the matrix, carbonaceous or subcori- 

 aceous ; ostiole an elongated slit. 'Lophiostoma. (Pf. I, i, 417.) 



Family 14. Mycosphaerellaceae. Perithecia at first subepi- 

 dermal, spherical minute. Guignardia, Mycosphaerella. Pf. I, 

 I, 421.) 



Family 15. Pleosporaceae. Perithecia buried in the matrix 

 with only the papiliform ostiole projecting, membranaceous. 

 Physalospora, Vciititria, Didymella, Didyniosphacria, Meta- 

 sphacria, Pleospora. (Pf. I, i, 428.) 



Family 16. Massariaceae. Perithecia for the most part perma- 

 nently covered by the epidermis with only the papilliform ostiole 

 projecting, coriaceous. Massaria. (Pf. I, i, 444.) 



Family 17. Gnomoniaceae. Perithecia at first subepidermal, 

 later erumpent, with an elongulated tubular ostiole, membran- 

 aceous. Hendcrsonia, Gnomonia. (Pf. I, i, 447.) 



Family 18. Valsaceae. Perithecia permanently enclosed in a 

 stroma (compound), black. Anfhostoiiia, J^alsa, Diaporthe. 

 (Pf. I, I, 454.) 



296 



