74 
sketched in 1880 but none were collected in any quantity till the follow¬ 
ing year. It is more abundant on the lower leaves but occurs also on 
the upper ones. The mycelium is very abundant, hyaline, somewhat 
branched and sparingly septate, about 2J-3J/* in diameter. The coni- 
dia are often curved so as to form a semicircle and sometimes even 
still more curved; sometimes one end is more curved than the other. 
Owing to this fact of the couidia, and especially the longer ones, being 
so much curved they are in reality much longer than is shown by the 
measurements given. 
Cercospora aquilegre, **. s. Spots distinct, about equally promi¬ 
nent on both sides of the leaflets, purplish brown, paler below, rather 
numerous, scattered over the leaf or sometimes confluent, variable in 
size, about 3-15 mra long and lj-5 mm wide, usually irregularly linear or 
oblong but sometimes nearly square when young, angular, often acutely 
pointed, limited by the veinlets; hyphse sparsely scattered, dusky, 
simple, usually several septate, not at all or only slightly constricted at 
septa, tapering scarcely if at all or sometimes even slightly larger above, 
below nearly straight but towards the tip usually several times strongly 
geniculate and dentate, occasionally bent nearly at right angles, rather 
long, 50-145 by 4-GJ/*, mostly 80-110 by 5-6/*, often growing in small 
tufts which are composed of 2-61oosely diverging hyphse, and are scarcely 
noticeable except in section ; conidia scarce, hyaline, more or less curved, 
flagellate, attached by the larger blunt end, the free end being very 
slender and acutely pointed, rather indistinctly multiseptate, scarcely 
or not at all constricted at septa, variable, often very long, 140-310/* 
long, 44-0/* in diameter at the base, and 14-3/* in diameter at the 
apex, mostly 150-250/* long, 5-6/* in diameter below, and 2-2^/* in 
diameter above. On radical leaves of Aquilegia Canadensis , Manhat¬ 
tan, Kans., June 21, 1889. (Mo. 1495.) This species is really distin¬ 
guished from any published species occurring on Ranunculacetc by its 
strongly bent hyphse and very long conidia. The mycelium is sparse, 
hyaline, sparingly branched, sometimes guttate, 2-3/* iu diameter. The 
conidia are sometimes rather variable in diameter towards the base, one 
or more of the segments being more slender than the adjoining ones. 
Cercospora geranii, n. s. Spots visible on both sides of the leaf, 
brownish or dusky, oval or oblong or sometimes sublinear, often mar¬ 
ginal or terminal sometimes limited by prominent veins, very often 
surrounded by a pale, but rather clear red coloration which is more 
prominent on the upper surface of the leaf and often involves more or 
less of the whole segment of the leaf especially the part beyond the 
spot and on the same side of the mid vein, 2-8 by lj-4 mm mostly 3-7 
by 2-3 ram ; tufts amphigenous, but rather more abundant above, thickly 
and evenly scattered over the whole spot, rather small, deep seated, 
usually arising through stomata, composed of from 5-15 or even 20-30 
hyplue, which are densely packed below the surface, but considerably 
divergent above; hyplue short and stout, dusky or brownish, 25-50/* 
