Dearness: North American Fungi 353 



On dead twigs of Salix exigua Nutt., Billings, Mont., Aug., 

 191 3, E. Bartholomew S 20 7- 



21. Macrophoma ulmicola Dearn. sp. nov. 



Pycnidia thickly scattered, 1 per sq. mm., surrounding the 

 branches, raising the epidermis into transversely ruptured pus- 

 tules, immersed in the cortex, not reaching or discoloring the 

 wood, globose, .3-5 mm. in diameter, ostiola short, hardly vis- 

 ible through the ruptured epidermis. Conidia abundant, hyaline, 

 granular, ovate, 18-30 X 15-18 /x, wall 2-2.5//, thick, on short 

 conidiophores. 



On dead branches of Ulmus americana L., Hudson Falls, N. Y., 

 March, 191 6, 5. H. Burnham 126. 



Sometimes two or three pycnidia are confluent then suggesting 

 Dothiopsis but they are normally and mostly single and separate. 



22. Cicinnobolus major Dearn. & Barth. sp. nov. 



Pycnidia amphigenous, amber-colored, sometimes so numerous 

 as to impart their color to the whole surface of the leaf, on a 

 dense, white mycelial subicle, limoniiform, 75-120 X 30-45 

 Spores hyalin, continuous, 6-8 X 3 



On Oidium on living leaves of Grindelia squarrosa (Ph.), 

 Billings, Mont., Aug., 1913, E. T. & E. Bartholomew 3024. 

 Type collection, Fungi Columb. 5007. 



C. Cesatii, fide Saccardo, has spores 2.5-3 X 1 



23. Sphaeropsis Diospyri Dearn. & Barth. sp. nov. 



Pycnidia seated in the dead cortex, .3-4 mm., so closely 

 clustered in some places as to cover the twig and suggest a 

 Haplosporella. The white core around which the brown conidia 

 tardily develop is Phoma-like and produces numerous minute 

 hyaline spores. Conidia brown, 20-215 X 7-10 ^ usually with a 

 median nucleus that gives them the appearance of being septate. 



On dead twigs of Diospyros Virginiana L., Shreveport, La., 

 Oct., 1913, E. Bartholomew 5458. Type collection, Fungi 

 Columb. 5088. 



24. Sphaeropsis latispora (Peck) sp. nov. 

 Sphaeropsis Smilacis Ellis & Ev. var. latispora Peck, Bull. NY. 

 State Mus. 150: 39. 1910. 



