Part 1, 1922] PHYLLOSTICTACEAE 13 
Associated with Cladosporium Trillii Ellis & Ev. 
On TRILLIACEAE: : 
Trillium petiolaitum Pursh, Washington. 
Trillium erectum L., New York. 
TYPE Locality: Pullman, Washington, on Trillium petiolatum. 
DIstRIBUTION: New York and Washington. 
10. Phyllosticta Medeolae Dearness & House; House, Bull. 
, N. Y. State Mus. 179: 29. 1915. 
Spots reddish or grayish-red, terminal and often gradually spreading until they cover 
half of the leaf-surface; pycnidia black, occurring on the upper side of the leaf, scattered 
over the infected area, reaching a diameter of 100; spores hyaline, sometimes containing 
two oil-drops, elongate, 2-3 X 12-15 p. 
On TRILLIACEAE: 
Medeola virginiana L., New York. 
TYPE LocaLiIty: Near Albany, New York, on Medeola virginiana. 
DISTRIBUTION: Known only from the type locality. 
11. Phyllosticta Iridis Ellis & Martin; Ellis & Ev. 
Proc. Acad. Phila. 1893: 456. 1894. 
Spots at first small, elongate or irregular in outline and with no distinct border, scattered 
over the surface of the leaf, purplish, the whole leaf-tip and sides finally becoming reddish- 
brown and dead, the original spot becoming still darker and often blackish; pycnidia in groups 
of 4-6 each on the original spots, subimmersed and not very conspicuous, visible on both 
sides of the leaf; spores numerous, narrow-ellipsoid, or subcylindric, 2-2.5 X 10-12». 
On IRIDACEAE: 
Tris versicolor I.., Florida, Michigan, New York, Ohio. 
Typr Locatiry: Ann Arbor, Michigan, on Irts versicolor. 
DIstRiBuTION: New York to Michigan and Florida. 
i Exsiccatt: Ellis & Ev. N. Am. Fungi 2937; Barth. Fungi Columb. 2949; Kellerm. Ohio Fungi 
190. 
12. Phyllosticta concava Seaver, sp. nov. 
Spots very variable in size, often reachinga diameter of several cm., cinereous or blackish 
the infected area much depressed and concave, with a strongly elevated rim, similar in appear- 
ance on both sides of the leaf-like stem, the infected tissue becoming very thin and often 
breaking out; pycnidia numerous, thickly scattered over the infected spot, reaching a diam- 
eter of 150-200 u; spores minute ellipsoid or rod-like, about 1-1.5 X 4 un. 
Causing large dead spots similar to those of Sphaerella Opuntiae Ellis & Ev. 
On CACTACEAE: 
Opuntia sp., Bermuda. : 
Type collected in Bermuda by Stewardson Brown, N. L. Britton, and Fred J. Seaver, November 
29-December 14, 1912 (reported erroneously, Mem. N. Y. Bot. Gard. 6: 509, as P. Opuntiae Sacc. 
& Speg.) 
13. Phyllosticta Raui (Peck) Dearness & House; House, Bull. 
N. Y. State Mus. 179: 36. 1915. 
Sphaeropsis Raui Peck, Bot. Gaz. 3: 34. 1878. 
Phoma Raui Sacc. Syll. Fung. 3: 143. 1884. 
Macrophoma Raui Berl. & Vogl. Atti. Soc. Venet. Trent. 10: 188, 1887. 
Spots suborbicular, reaching a diameter of 1-2 mm., yellow; pycnidia numerous, gregari- 
ous, minute, black, reaching a diameter of 150-170 u; spores ellipsoid, 16-20 u long. 
On CARDUACEAE: 
Artemisia scopulorum A. Gray, Colorado. 
Typz Locality: Colorado, on Artemisia scopulorum. 
DIsTRIBUTION: Known only from the type locality. 
