70 NORTH AMERICAN FLORA [VoLUME 6 
277. Phyllosticta brunnea Dearness & Barth.; Dearness, 
Mycologia 9: 351. 1917. 
?Phyllosticta populea Sacc. Michelia 1: 135. 1878. 
?Phyllosticta osteospora Sacc, Michelia 1: 531. 1879. 
Spots indefinite, grayish or brownish, the color grading off into the healthy tissue of the 
leaf, reaching a diameter of 5 mm. to 1 cm., visible on both sides of the leaf but very faint 
on the under surface; pycnidia numerous, thickly scattered over the surface of the infected 
spot, brownish, giving a brownish tint to the whole spot when present in abundance, depressed, 
reaching a diameter of 90-150 un; spores minute, rod-like, 0.75-1 X 4-6 un. 
ON SALICACEAE: 
Populus angustifolia James, Colorado, 
Populus sp., Montana. 
TYPE LOCALITY: Montrose, Colorado. 
DISTRIBUTION: Montana and Colorado; (also in ?Europe). 
Exsiccati: Barth. Fungi Columb. 5040. 
278, Phyllosticta glauca Cooke (Grevillea 6: 136, hyponym. 1878); 
Ellis & Ev. N. Am. Phyllost. 4. 1900. 
Septoria glauca Cooke; Sacc. Syll. Fung. 3: a. as synonym. 1884. 
Depazea glauca Sacc. Syll. Fung. 3:64. 1884 
Spots circular or subcircular in feiss at first small and almost entirely black, increasing 
in size until they reach a diameter of 1 cm., becoming nearly white with the black color re- 
stricted to a very narrow border which is slightly elevated, the main spot surrounded by a 
yellowish area which gradually blends off into the healthy tissues of the leaf, the spot indis- 
tinctly visible on the under side of the leaf; pycnidia minute and about evenly distributed 
over the spot, visible on the under side of the leaf but opening upward, reaching a diameter 
of less than 100 »; spores minute, short-cylindric or rod-shaped, 1 X 4 un. 
On MAGNOLIACEAE: 
Magnolia glauca I,., Alabama, Florida. 
Tyre LocaLity: Gainsville, Florida, on Magnolia glauca. 
DIsTRIBUTION: Florida and Alabama. 
Exsiccati: Rav. Fungi Am. 93. 
279. Phyllosticta Platani Sacc. & Speg.; Sacc. 
Michelia 1: 153. 1878. 
Spots large, brown, turning gray, rather indefinite in form; pycnidia dark-brown, lenticu- 
lar, erumpent, mostly on the under side of the leaf, reaching a diameter of 90 4; spores hya- 
line, oblong, 1 XK 44. 
ON PLATANACESE: 
Platanus sp., Alabama, Kansas. 
Tyre Locality: Europe, on Platanus orientalis. 
Disrrisution: Alabama and Kansas; also in Europe. 
280. Phyllosticta virginiana (Ellis & Halsted) Seaver. 
Phome virginiana Ellis & Halsted, Jour. Myc. 4:8. 1888. 
Spots large and irregular, often covering a large part of the leaf, becoming dead and 
brown or occasionally cinereous, visible on both sides of the leaf but more distinct on the 
upper surface, reaching a diameter of 3-4 cm.; pycnidia numerous, thickly gregarious, often 
giving the infected spot a blackish appearance, occurring on either side of the leaf, reaching 
a diameter of 80-100 uw; spores abundant, minute, rod-like, about 1 X 5 nu. 
On MaLacCEAE: 
Amelanchier canadensis (L.) Medic., New York. 
Amelanchiey sp., Wisconsin. 
ON AMYGDALACEAE: 
Prunus americana Marsh., Kansas. 
Padus melanocarpa (A. Nelson) Shafer (Prunus demissa Walp., Cerasus demissa melano- 
carpa A. Nelson), Kansas, Montana. 
Padus nana (Du Roi) Roemer (Prunus nana Du Roi), Montana. 
