Davis—Parasitic Fungi of Wisconsin . 
761 
walls of the smaller extremity are thickened and 
the rostrum becomes solid reminding one of the 
apical portion of some Uromyces spores. This 
gives somewhat the appearance of a septum at the 
junction of the thickened portion with the body 
of the sporule which is perhaps what Passerini 
called an obscure extra median septum in his de¬ 
scription and which led Saccardo to transfer the 
fungus from Gloeosporium to Marsonia. As the 
sporules are often 2—4 nucleate however it is 
probable that they do become septate before 
germination. 
706. Phyllosticta apicalis n. sp. 
Causing brown areas which occupy *4 to % of the 
distal portion of the leaf extending further along 
the midrib than the margins therefore somewhat 
wedge shaped at base, immarginate; pycnidia 
numerous, amphigenous, dark brown or black, 
opening by a wide aperture; sporules oblong to 
oval, hyaline, continuous, 4—7 X 1—3 microns. 
On Salix lucida Muhl. Dousman; July, ,4906. 
707. Phyllosticta diervillae n. sp. 
Spots irregular, frequently apical, brown with an in¬ 
definite yellowf border, 1—4 cm jin diameter; 
pycnidia amphigenous, scattered, globose, rather 
light brown, 80—410 microns; sporules hyaline, 
oblong 3—5 X 1%—2 microns. On leaves of 
Diervilla trifida Moench. Gordon. July, 1907. 
708. Phyllosticta iridis E. & M. 
On Iris versicolor L. Kenosha county and Pacine. 
Sporules 12—46 X 2 y 2 —3 y 2 microns. 
709. Phyllosticta mulgedii n. sp. 
Spots irregular, dark brown, immarginate, 1—3 cm 
in diameter; pycnidia epiphyllous, inconspicuous, 
scattered, brown, globose, 75—100 microns; 
sporules hyaline, elliptical to oblong and globose, 
3—7 X 3 microns. The sporules are mostly bi- 
guttulate and probably become septate before 
