PVRENOPEZIZA 



221 



On herbaceous plant tissues. 



Spores 25-30 n long, on Thaliclrum. 

 Spores less than 25 /^ long. 



Spores mostly 10-12 n long. 

 Spores 14-16 /x long. 

 On Fesluca. 

 On Solidago. 

 On Potent ilia. 

 Spores 12-13 jx long, on Cephalanthus. 

 Spores 8-12 // long. 

 On stems of Liniim. 

 On stems of various kinds. 



Hymenium gra>' or rose-colored. 

 Hymen ium reddish-yellow. 

 Spores 7-9 m long. 

 On Artemisia. 

 On Apocynum. 

 On Smilax herhacea. 

 On monocotyledonous stems, Carex. 

 Spores 12-20 m long. 

 Spores 18-20 ix long. 

 Spores 12-15 /j long. 



Spores 4-5 X 13-15 m- 

 Spores 2 X 12-14 m- 

 Spores 10-12 yu long. 

 Spores 5-7 /j long. 



7. 7^ Thalictri. 



15. P. Artemisiae. 



16. P. Dearnessii. 



17. P. smilacicola. 



18. P. caricina. 



19. P. yogoensis. 



20. P. cervinula. 



21. P. Car ids. 



22. P. miiltipunctoidea. 



1. Pyrenopeziza Rubi (Fries) Rehm, Ascom. 416. 1878. 



E.xcipula Rubi Fries, Syst. Myc. 2: 190. 1822. 



Mollisia Rubi Karst. Acta Soc. Fauna Fl. Fenn. 2": 136. 1885. 



Apothecia gregarious, or occasionally crowded, at first im- 

 mersed, rounded, finally erumpent through the ruptured epi- 

 dermis, sessile, expanding and becoming cup-shaped, .3-1 mm. in 

 diameter, the margin inrolled when dry; brownish-black; asci 

 clavate, reaching a length of 45 55 fj. and a diameter of 6 8 jjl, 

 8-spored, spores elongate-clavate, or almost cylindric, 1.5-2.5 X 

 7-9 n; paraphyses filiform, 1.5 n in diameter. 



On dead canes of Ruhus. 



Type locality: Europe. 



Distribution: Delaware to Oregon and Washington; also in 

 Europe. 



2. Pyrenopeziza lacerata (Cooke & Peck) Sacc. Syll. Fung. 8: 



361. 1889. 

 Peziza lacerata Cooke & Peck, Grevillea 1: 6. 1872. 



