350 



Mycologia 



13. Lophiostoma excipuliforme (Fr.) Ces. & DeNot. Comm. 

 Soc. Crit. Ital. 1 : 219. 1863 

 " We have seen no American specimens of the normal form 

 on bark of deciduous trees." — Ellis & Ev. N. Am. Pyrenom. 222. 

 Their variety Metis differs in having larger spores up to 75 fx 

 and narrower ostiola. Mr. S. H. Burnham's 117 on maple bark 

 collected at Hudson Falls, N. Y., agrees well with the description 

 based on Rehm's 238. The nearly superficial perithecia with 

 prominent ostiola enlarged at the top, the 6-7 septate, non-con- 

 stricted sporidia mostly about 33-35 X 9-1 0/x. with subhyaline end 

 cells, leave no room to separate this from the European forms. 



14. Phacidium Gaultheriae sp. nov. 



Apothecia scattered, conspicuous by their dark color on the 

 whitened stems of the host, stellately ruptured, .75-1.25 mm. The 

 whitened areas upon which the apothecia are seated extend wholly 

 or partially around the stem and are bounded by a raised line. 

 Asci cylindric-clavate, 90-110X10-12^; paraphyses abundant, 

 linear, some of them branched. Sporidia hyaline, grumous or 

 uninucleate, obliquely uniseriate or sub-biseriate, 19-22 X 6-6.5 p. 



On living stems of Gaultheria Shallon Ph. ; Vancouver Island ; 

 August, 1916, John Macoun 978. 



15. Helvella sphaerospora Peck, Ann. Rep. N. Y. State Mus. 

 27: 106. 1875. 31: 59. 1879. 47: 43- 1894. 

 and Bull. 51 : 299. 1897 

 This rare and interesting species well marked by its globose 

 spores was found in quantity on old sawdust heaps near the 

 Ottawa River, June, 1917, by Mr. W. S. Odell. Dr. F. J. Seaver 

 reports its recent collection by Prof. Orton in Vermont. 



16. Exoascus Aceris Dearn. & Barth. sp. nov. 



Spots subcircular or irregular, .5-1.5 cm., reddish-gray on the 

 upper side, paler beneath, deciduous. Asci numerous, hypophyl- 

 lous, short-clavate or cylindric, mostly about 30 X 9 Sporidia 

 hyaline, sub-globose or irregular, 4.5-6 X 3-4-5 



On living leaves of Acer grandidentatum Nutt., Parley's 

 Canyon, Utah, June, 191 5. Bartholomew and Garrett 5839. 

 Type collection, Fungi Columb. 5018. 



