NEW AMERICAN FUNGI. 
29 
septatis, constrictis, plerumque ad apicem hyalino-apiculatis 
(•1 X *01 mm.). 
On living oak branches (Rav., 127). Florida. 
Having the appearance of Dichcena strumorum. 
Helminthosporium paxvulum, Cooke in Rav, Amer. Fungi, No. 613. 
Tenue effusum, atro-fuscum. Hyphis simplicibus, tenuissimis, 
septatis, erectis, flexuosis vel subrigidis (’OS-*! mm. long). Sporis 
inspersis, cylindricis, obtusis, 1-2 septatis, rectis, fuscis (*01-*017 
X *0035 mm.). 
On denudated branches. New England (5866). On Vaccinium 
arboreum (4806), and upon Gynerium argenteum. Rav. Amer. 
Fungi, No. 613. 
No feature present to distinguish the form on the grass from 
those growing on branches. A very thin and delicate species. 
Helminthospoxium asterinum, Cooke. 
Maculgeforme, asteroideum, atrum. Floccis erectis, simplicibus, 
rigidulis, subflexuosis, septatis, fuscis(*006-*007 mm.diam.). Sporis 
obclavatis, superne rotundatis, deorsum truncatis, 7-8 septatis, 
fuscis (‘OO-’ll X •015-*017 mm.). 
On Liquidamhcer. Florida, S. Carolina (1541). 
There is not the slightest doubt that the specimens in Rav. 
Fung. Amer., No. 163, described in “ Grevillea,” vol. vi, p. 141, 
were quite immature, and that the description, as amended above, 
applies to the mature plant. Having now seen many gradations, 
we are convinced of the identity of the above. The peculiar habit 
remains the same, the chief difference is in the increase in size of 
the spores. 
Helminthospozium lanceolatum, Cooke in Rav. Amer. Fungi, No. 614 . 
Effusum, atrum. Hyphis simplicibus, erectis, flexuosis, pluri- 
septatis, subfasciculatis, atrofuscis. Sporis lanceolatis, sursum 
longe cuspidatis, hyalino-fuscis, deorsum truncatis, multiseptatis, 
(•1--15 X *008-*01 mm.). 
On bark of Berchemia (Rav., 2910). S. Carolina. 
Threads about half the diameter of those in Helm, caudatum. 
B. & C. 
Helminthosporium minus, Schwz. 
According to an authentic specimen this is only a dwarf variety 
of Helm, macrocarpum. 
Helminthosporium dubium, Schwz. 
No appreciable difference between this and Helm, caudatum, ' 
B. &. C., according to original specimen from Schweinitz. 
Helminthosporium brassicaecola, Schwz. 
The only authentic specimen we have seen consists of the spores 
of Helm, foliculatum, Corda. 
Helminthosporium crustosum, Schwz. 
Has a compact crustaceous black stroma, from which arise short 
slender threads ; but no spores could be detected in the original 
specimen. It is probably a distinct species, in so far as the peculiar 
stroma is concerned. 
