Part 1, 1922] PHYLLOSTICTACEAE 51 
189. Phyllosticta ludoviciana Ellis & Mart. Jour. Myc. 2: 130. 1886. 
Phyllosticta marginalis Ellis & Ev. Jour. Myc. 4:9. 1888, 
Phyllosticta apiculate Sacc. & Syd. in Sacc. Syll. Fung. 14: 865. 1899. 
Spots subcircular or irregular in form, internal or usually marginal, reaching a diameter 
of 1 cm., rusty-brown, pycnidia scattered over the infected area, flattened, erumpent, reach- 
ing a diameter of 150 u; spores rather abundant, ellipsoid or fusoid, 2-3 X 5-8 Me 
ON FaGacEaE: 
Quercus nigra L. (Quercus aquatica Walt.), Louisiana. 
‘TYPE LOCALITY: Louisiana, -on Quercus aquatica. 
DIsTRIBUTION: Louisiana. 
190. Phyllosticta virens Ellis & Langlois, Jour. Myc. 6: 36. 1890. 
Spots rather irregular but usually definite in outline, pale grayish-brown, surrounded 
by a dark line, reaching a diameter of 1 cm., causing the under side of the leaf to become 
blistered; pycnidia numerous, thickly scattered over the infected spot, restricted to the upper 
side of the leaf, reaching a diameter of 100 4; spores ellipsoid or subfusoid, 1.5-2.5 X4+7 u. 
On FaGAcEAE: 
Quercus virginiana Mill. (Quercus virens Ait.), Louisiana. 
Typx Locality: Louisiana, on Quercus virens. 
DIsrRiBUTION: Louisiana. 
191. Phyllosticta Heteromeles Cooke & Hark. Grevillea 9: 84. 1881. 
Spots marginal or internal, subcircular or irregular and often occupying half the surface 
of the leaf, cinereous or whitish, surrounded or partially surrounded by a slightly elevated 
border and often marked with concentric rings, a little paler on the under side of the leaf; 
pycnidia numerous, scattered over the infected spot, rather large, reaching a diameter of 
130-200 uw; spores numerous, ellipsoid or subfusoid, 2 X 8 xz. 
On RoSACEAE: 
Heteromeles arbutifolia Roem., California. 
Type LocaLitry: California, on Heteromeles arbutifolia. 
DisTRIBUTION: California. 
Exsiccatr: Ellis, N. Am. Fungi 751; Ellis & Ev. Fungi Columb. 767. 
192. ‘Phyllosticta zonata Ellis & Ev. Bull. Torrey Club 
27: 54. 1900. 
Spots irregular, reddish-brown, zonate, definite in outline, with the margin slightly ele- 
vated and a little darker, reaching a diameter of 2-10 mm. or confluent and covering a large 
portion of the leaf; pycnidia minute, covered by a thin whitish epidermis, occurring on the 
upper side of the leaf; spores ellipsoid, 1.5-2 X 4-6 x. 
On MaLacgBAE: . 
Malus ioensis (Wood) Britton (Pyrus ioensis Carr.), Iowa, 
TypE LOCALITY: Iowa, on Pyrus ioensis. 
DISTRIBUTION: Iowa. 
Exsiccati: Ellis & Ev. Fungi Columb. 1444. 
193. Phyllosticta Dircae Ellis & Dearness, Can. Rec. Sci. 
5: 267. 1893. 
Spots circular or subcircular in form, yellowish-brown in the center, brownish-black 
about the margin, faintly marked with concentric rings, reaching a diameter of 5-10 mm., 
the center becoming thin and often breaking out; pycnidia numerous, scattered over the 
entire spot, opening on the upper side of the leaf but visible on the under surface also, reddish- 
brown to blackish, reaching a diameter of 60-100 x; spores narrow-ellipsoid, 2 K 7 n. 
On THYMELAEACEAE? . 
Dirca palustris L., Ontario. . : 
Type Locality: London, Ontario, on Direa palustris. 
DIsTRIBUTION: Known only from the type locality. 
Exsiccatr: Ellis & Ev. N. Am. Fungi 2538. 
