FAIRMAN : ASCOMYCETES FROM NEW MEXICO 



245 



Pycnidia scattered or gregarious, immersed, becoming erum- 

 pent-superficial, centrally ostiolate, globose-depressed, black, ioo- 

 150 /jl in diam. ; spores filiform, straight or curved, simple, con- 

 tinuous, hyaline, about 27-30 X -5- 1 Rhabdospora dumetorum 

 sp. nov. 



Leptosphaeria Doliolum (Pers.) DeNot. 

 On old stems of Heliopsis scabra Dunal (13653). 



Leptosphaeria nigricans Grindeliae var. nov. 



Perithecia scattered or gregarious, on blackened areas on the 

 stems, depressed-globose, finally collapsing, flattened, or sub- 

 umbilicate, black, 250-300 p in diam. ; asci clavate-cylindric, 

 rounded at the apex, short-stipitate, 8-spored, 70-100 X 10 /x, sur- 

 rounded by numerous filiform paraphyses ; spores subbiseriate, 

 3-5-septate, slightly constricted at the middle septum, oblong- 

 fnsoid, hyaline at first, becoming yellow or greenish-yellow, 23- 

 2 7 X 3-33-4^. 



Differs from Leptosphaeria nigricans Karst. (of which Lepto- 

 sphaeria tenera Ellis is a small-spored form) in gregarious, col- 

 lapsing perithecia. 



Leptosphaeria ogilviensis (B. & Br.) Ces. & DeNot. 



On old stems of Pericome caudata Gray (14599), on old stems 

 of Machaer anther a Bigeloviae (Gray) Greene (14739), an d on 

 old stems of Delphinium robustum Rydb. (13664). 



Leptosphaeria praeclara typhiseda (Sacc. & Berl.) Berl. 

 On old stems of Typha latifolia L. (14746). 



Leptosphaeria culmifraga minuscula Rehm. 

 On old stems of Elymus canadensis L. Spores 6-8-septate, 

 3° X 3-33 f 1 



Leptosphaeria lupincola Earle, PI. Bak. 2 : 20. 1901 



On old stems of Lupinus ingratus Greene. This is in limited 

 quantity, for the most of this collection (14678) is a Phoma with 



