go BOTANICAL GAZETTE [ AUGUST 
them a blackened appearance at the margin, and long sete pro- 
ject some distance above the mass of conidia; these are dark 
brown except at the base, which is nearly hyaline, and they are 
frequently once or twice septate. The stems become blackened 
with a coarse, dark stroma, of irregular, more or less swollen 
cells, often terminating in club-shaped bodies. The mycelium 
does not develop below the surface of the infusion, but forms 
a compact coating over the surface which becomes glazed 
and shining, and of an intensely dark, reddish - brown color, 
becoming almost black, retaining, however, a reddish, iridescent 
hue. 
The Colletotrichum on cucumber agrees so closely in all the 
growth characters that parallel cultures of the two in agar or om 
bean stems cannot be distinguished from each other. The sim 
larity of growth leaves no doubt as to the identity of the species 
found on the two hosts, although the illustration of the two im 
section, and the appearance which the fungus gives to the host, 
might lead one to suppose them distinct species. 
COLLETOTRICHUM LINDEMUTHIANUM (Sacc. & Magn.) Scrib- 
ner, 1887 (figs. 19-20, 70-74); on bean (Phaseolus vulgaris). 
The history of the anthracnose of the bean has been = 
interesting one, and much discussion has arisen in regard to its 
position and nomenclature. 
We have an account of its first observation by Lindemuth 
at Popplesdorf, 1875. It was described and named in his honor 
by Saccardo and Magnus in Michelia 1: 129, under the name 
Glaosporium lindemuthianum. Owing to its economic importance 
it subsequently received considerable attention, and has bee® 
figured and described in various journals. 
Professor Scribner (Rept. Veg. Path. 188 7), records the a 
ence of sete in the acervuli, and suggests that the species 4 
placed in the genus Colletotrichum. Inthe report of the United 
States Department of Agriculture, 1887, Mr. Galloway i - 
the fungus and mentions that the presence of setae was constal’s — 
; ; . also 
though very scarce in some cases, in all the material. He a’s° 
