8 
JOURNAL OF MYCOLOGY. 
[Vor, IV, No. 1. 
Cercosfora anomala, Ell. & Ilalsted.—On living leaves of Actin- 
omeris squarrosa. Ames, Iowa, August, 1887, B. D. Halsted. Forming 
indefinite patches on the under side of the leaf, olivaceous at first, 
becoming black. The leaf also finally shows subindefinite, blackish- 
brown spots above. The erect, fertile liyphse, 30—50 x 4—5 pale oliva¬ 
ceous, arise from prostrate, subhyaline or pale olivaceous, branching, 
septate threads and bear at their tips the oblong-cylindrical, smoky- 
hyaline. 20—40-x 4—5 /'- conidia. This has the general aspect of C. Heli- 
anthi, E. & E., but the hyphse and conidia are quite different and the 
species varies from the ordinary type of Cercospora, approaching Cladvs- 
porium. 
Cercosfora Oxyf.apiii, Ell. & Halsted.—On living leaves of Oxyba- 
phus nyctagineus. Iowa City, June, 1887, A. S. Hitchcock. Hyphae 
amphigenous, pale, short, 25—30 x 3 !>- and crooked, sparingly 'septate, 
mostly issuing from the stomata of the leaf in very minute, black, 
spreading tufts, with a coarsely cellular base. These tufts or fascicles 
appear in indefinitely-limited groups and are so minute as to be barely 
visible under the lens. The conidia are filiform-obclavate, 3—4 septate, 
hyaline, 30—50 x 3 y. The leaf soon becomes spotted with rusty-brown, 
indefinite spots, which are more conspicuous above. 
Cylindrosporium Iridis, Ell. & Ilalsted.—Acervuli very minute 
and numerous, subcuticular, blackish, forming continuous series or strips 
between the parallel nerves of the leaf for several cm. in length, the 
exuded spores appearing like a thin white tomentum on the matrix; 
spores acicular, continuous, hyaline, 15—22 x 1 hyphse short (8—10 x 2 
//.), obscure, mostly toothed above. On living leaves of Iris. Iowa City, 
June, 1887, A. S. Hitchcock. 
Vermicularia sanguinea, Ell. & Halsted.—On leaves of Panicum 
(some introduced European species) in grass plots and lawns. Ames, 
Iowa, 1887, B. D. Halsted. Spots amphigenous, subelliptical, 2—3 millim. * 
in diameter, at first smaller and purplish-red, becoming larger and black 
and finally white in the center, the leaf stained purplish-red around the 
spots; perithecia erumpent, subconcentrically arranged or irregularly 
scattered, or collected in a compact group in the center of the spots, 
depressed-globose, open above, beset with straight, black, continuous or 
sparingly septate, black bristles, 60—90 x 3—31 /'•; conidia broad, arcuate- 
fusoid, more acute and narrower above, hyaline, granular and nucleate, 
20—22 x about 6 v. In its mode of growth and in other respects appar¬ 
ently distinct from the other graminicolous species. 
Phoma Virginiana, Ell. & Ilalsted.—On leaves of Prunus Virgin- 
iana. Ames, Iowa, September, 1887. Spots amphigenous, large (4—1 
cm.), round, subindefinite, rusty brown above, darker below; perithecia 
hypopliyllous, minute, abundant, erumpent-superficial; sporules oblong- 
cylindrical, 5—7 x 11/'-. 
