75 
long, 3-4/* in diameter at base and 3-3£/* in diameter at apex, mostly 
about 30-40/* long, simple, sparingly septate afbase, often somewhat 
bent at the tip and showing several closely proximate scars where 
eonidia were attached ; conidia abundant, persistent, hyaline, straight 
or slightly curved, cylindrical or, when very long, clavate, acute at both 
ends, attached by the larger end (!), plainly 1-5, mostly 3-4, septate, 
not constricted at septa, quite variable in size, and especially in width, 
36-98/* long, 1^-3/* in diameter at base and 1J-3/* in diameter at 
apex, mostly 48-85/* long, 2J-3/* in diameter at base and Ll-3/* in 
diameter at apex. On languishing lower leaves of Geranium Carolinia- 
num , St. George, Pottawatomie County, May 30, 1887 (No. 898). The 
conidia in this species are remarkably abundant and persistent, and 
in good specimens may be seen attached to the hyphae in such great 
numbers as to form a thin whitish coating over the spot. The tufts are 
quite variable in size and appear as minute black dots before the conidia 
• are fully formed or after they have fallen. The mycelium is rather 
sparse, hyaline, rather regular in diameter (2^-3/*), but sparingly if at 
all septate. 
Cercospora gaur^e, n. s. Spots amphigenous, definite, suboliva- 
ceous, surrounded by an indefinitely reddish coloration, suborbicular, 
oval, or rounded angular, about 5-10 mm iu diameter, often limited by a 
vein on one side ; tufts mostly epiphyllous but usually amphigenous,at 
first small, composed of few hyplue, but becoming large (40-100/* iu 
diameter), composed of hypliac which are closely packed or slightly di¬ 
vergent; hypha3 short, siuqfie, continuous, subfuscous, tapering slightly 
from the base, 15-30 by 2J-4/*, mostly 18-25 by 3-4/*; often dentate 
above, and sometimes bent or strongly dentate below; conidia of the 
same color as the liyphm, slightly curved or straight, linear clavate, the 
larger attached ends subacute truncate, the free ends somewhat acute, 
when young nucleate, when mature 3-7 septate, 40-108 by 2-4/*, mostly 
5G-90 by li-3 /*. On leaves of Gaura biennis , Columbus, Ivans., July 
12,1887 (No. 1491). The nuclei in the young conidia appear to be in 
pairs on either side of the places where septa will appear. 
Cercospora lobelias, n. s. Spots visible on both sides of the leaf 
but more prominent above, light grayish or pallid dirty yellowish, at 
first minute, suborbicular then larger, 3-8 mm in diameter, oval or subor¬ 
bicular, often subangular and sometimes irregular, surrounded by an 
indefinite dull purplish coloration, which is more pronounced around the 
smaller spots. Tufts scattered amphigenous but often more abundant 
below, composed of 10-20 or more laxly diverging hyplue arising from an 
elevated polycellular, tubercular base; hyphae clear fuligenous brown, 
less colored above, 50-135/* long; 5-7// in diameter at base, and 21-5/* 
in diameter at apex, mostly about 95-130/* long; 5-7/* in diameter at 
base, and 3J-44/* in diameter at apex, above subgeniculate and show¬ 
ing at considerable intervals the old scars where conidia were attached, 
faintly several septate, not constricted at septa; conidia rather sparse, 
