i885.] 



J^ORTH AMERK AN GLCEOSPORIA. 



Ill 



basidia, nearly half as long as the spore. 



On lower surface of Fagus ferruginea leaves, Pennsylvania (Dr. 

 Martin.) 



9. Glceosporium quernum, Hark. Bull. Cal. Acad. Sci., Feb. 1884. 

 Amphigenous, oozing out in small heaps. Spores hyaline, elliptic or 



oblong, with 1—3 vacuoles, 12—18 x 4—6 y . 



On leaves and young shoots of Quercus o.grifolia, in Golden Gate Park, 

 California, in some seasons giving the oaks the appearance of having been 

 scorched by flame. 



10. Glceosporium septorioides, Sacc, in Miscell. My col., ser. II, 

 p. 16. Marsonia quercina, Winter, Rabh.- Winter Fungi Eur. 3085. 



Spots determinate, round or irregular, often confluent, becoming 

 white above, yellowish or rusiy-brown below, 2—4 mm. in diameter, 

 with a narrow dark border. Acervuli hypophyllous, generally one in the 

 center of each spot but sometimes several, scattered, covered, slightly 

 elevated but scarcely visible, at length collapsing. Spores f usoid, nucle- 

 olate, curved, acute at each er.d, hyaline, 14—18 x 2 



On living leaves of Quercus imbricaria, Mx., Missouri (Demetrio.) 

 We have not been able to find any septum in the spores. 



Var. major, on leaves of Q. nigra (?) at Il^ewtield, IST. J., has the 

 spores 18 — 23 x 2 endochrome often indistinctly divided in the center. 

 Spots mostly smaller and showing less of the white color above. Acer- 

 vuli mostly epiphyllous. 



11 . Glceosporium Betularum, E. & M. , Am. Kat. , Dec. 1882, p. 1002. 

 Spots light-brown, nearly round, 2—3 mm. in diameter, border dark, 



Acervuli brown, amphigenous, falling out and leaving a dark, cup-shaped 

 cavity, 120—140 Spores hyaline, ovate or obovate, 9— lOi x 6 !■>- on very 

 short basidia. 



On leaves of J5etitZa 7^^g'ra and 5. ^e?^^a, Sept., Bethlehem, Pa. (Rau), 

 Illinois (Earle). 



12. Glceosporium angulatum, Cke., Taxas Fungi, p. 142. sub Dis- 

 cella. 



Gregarious, covered, splitting the epidermis in an angular manner. 

 Spores fusoid-elongated, hyaline, 20 x 4 ij-. 

 On branches of trees, Galveston, Texas. 



13. Glceosporium Lindemuthianum, Sacc. & Magnus, Mich. I, p. 129. 

 Spots on the pods or more rarely on the leaves and stems, subrotund, 



dark brown when dry, surrounded at first with a rufous border. Acer- 

 vuli dirty-white, in the center of the spot, raising the epidermis in a pus- 

 tuliform manner, then erumpent. Spores oblong, straight or curved, 

 rounded at each end, 15—19 x 3i— 5i Z-*-, borne on fasciculate, cylindrical, 

 simple basidia, 45—55 !>■ long. 



On living pods of Phaseolus[Q,Vi\i.) Bethlehem, Pa., (Rau) ]S"ewfield, 



J. (Ellis,) Wis. (Trelease.) 



Dr. Farlow writes that he finds this species common on beans in the 

 Cambridge Market since 1882. 



