97 
C. & E.* and Passerines II. turcicumA The specimens in Ellis’s North 
American Fungi were found on dead leaves of Zea Mays. Passerini’s 
specimens were also found on the species, and he attributed it to the 
fungus he has described. Briosi and Cavarat have described, figured, 
and distributed the same fungus in their collection of parasitic fungi. 
In their spores these species seem to agree well enough with Rabenhorst’s 
H. graminum , which was found by Caspary§ on barley. Frank || con¬ 
siders it to be only a well developed Cladosporium. In 1885 Eriksson 
found a disease on barley, near tlpsala and Stockholm, which he con¬ 
sidered identical with that found by Caspary on barley in Germany. 
The Iowa barley disease agrees with Eriksson’s, but differs from the 
corn disease found by Passerini. According to this observer the leaves 
of corn affected by the fungus are at first yellow, then become more or 
less discolored, and finally wilt. 
The spots in the specimens distributed by Briosi and Cavara on corn 
are sharply limited and extend across the veins. This disease mani¬ 
fests itself long before barley has u headed out.” In this barley dis¬ 
ease the spots extend from the base to the very tip of the leaf in paral¬ 
lel rows. The diseased leaves form quite a contrast to those of the 
adjoining healthy plants, as they are variegated pale yellow and green. 
All the stalks of a stool are affected. The plants die prematurely, and 
soon after death the leaves become torn into shreds. An examination 
of the affected parts when the variegated linear stripes appear shows 
a colorless mycelium permeating the tissues of the leaf. Later a num¬ 
ber of erect septate hyphse appear through the stomata or they break 
through the epidermis, bearing large three to six celled spores at the 
end. Occasionally one finds these liyplite branched. The mass of brown 
hyphae and spores along the veins can be easily seen with the naked 
eye. The spores germinate readily, often a number of germinating 
tubes coming from a single spore. I have also found the Helminthos- 
porium where Scolecotrichum , and Cladosporium graminum had appeared, 
but not in such abundance. 
The usual amount of smut has occurred during the past summer. 
Ustilago segetum of oats, barley, and wheat and U. Maydis ot corn have 
d.one an unusual amount of damage. Grasses have also been affected 
by several kinds of smut, some of which are quite destructive. 
Timothy Smut , (Tilletia striceformis (Westd.) Magnus).—Not only did 
* Ellis N. Am. Fungi No. 45. Grevillea Vol. vi, p. 88. 
tLa nebbia del grauturco. pp. 3. Parmia Schroter Just, Bot. Jabresb. 1878, p. 
184. 
X Fungi Parassiti delle piante cultivate od utili essicati delineati e descritti. Fasc. 
in and iv, No. 81. 
$ Herbarium Mycologicum No. 332. 
|| Ivrankkeiten der pflanzen, p. 582. 
51 Ueber eiue Blattflecken Krankkeit der Gerste aus den Berichten der Botaniska 
Sollskapet i Stockholm. Bot. Centralbl. Vol. xxix, p. 89. Sorauer Just Bot. Jahresb., 
1885, p. 515. Distributed in Fungi Scand. No. 187. 
