781 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
New Genera of Hyphomycetes.* * * § — Mr. R. Thaxter describes the 
following new genera of Hyphomycetes from North America : — 
Helicocephalum. Sterile hyphse of small diameter, aseptate or rarely 
septate, creeping over the substratum, and giving rise to highly 
differentiated erect simple aseptate sporiferous hyphse, furnished with 
rhizoid-like attachments at the base, and spirally coiled at the apex ; the 
apical portion becoming septate and constricted at intervals, its segments 
separating at maturity in the form of large dark-coloured, thick-walled 
spores. H. sarcophilum on carrion. 
Gonatorrhodiella. Sterile hyphse hyaline, creeping, septate and 
branched ; fertile hyphse erect, sparingly septate, swelling into a 
spherical terminal sporiferous head, which, after maturity, may become 
once or twice proliferous ; spores formed directly from short processes 
covering the fertile head, in chains of a definite number, by successive 
apical budding. G. parasitica on Hypocrea and Hypomyces. 
Desmidiospora. Spores of two kinds on the same mycele of hyaline 
septate hyphse ; microconids small, hyaline, subfusiform, produced at 
the apex of subulate lateral basids ; megaconids very large, terminal, 
brown, flat, multilocular, several times successively more or less irre- 
gularly dichotomously lobed. D. myrmecophila on a large ant. 
Mucilaginous Slime on Trees. - ]* — Dr. F. Ludwig observed during 
last spring an extraordinarily copious flow of white or red mucilage 
from wounds caused by the lopping of branches from birches and horn- 
beams. The white slime swarmed with bacteria, but was caused chiefly 
by a new species of Endomyces, which he calls E. vernalis. The mycele is 
much slenderer and less branched than that of E. Magnusii. The cause 
of the red colour, which was comparatively rare, was the presence of 
filaments of a Bhodomyces, probably a new species, to which he gives the 
name B. dendrorhous. 
New Achorion, A. Arloini.f — Dr. G. P. Busquet describes a fungus, 
parasitic on a human subject, bearing a resemblance both to Achorion 
Schoenleini and to Trichophyton tonsurans. Experiments in growing it 
on various media are described in detail. On liquid nutritive substances 
it has two mycelial forms, a filamentous and a globular, presenting in 
this respect analogies both to Aspergillus and to Mucor . The exogenous 
non-sexual organs of reproduction are of three kinds, — mycelial spores, 
conidial structures, and aerial spores, the first two formed only in liquid, 
the last either in liquid or on solid media. 
Protophyta. 
a. Schizophyceee. 
GlceochseteJ — Herr L. Reinhard describes the history of develop- 
ment of Gloeochsete Wittroclciana, which he transfers from the Chroococ- 
caceae to the Palmellacese, placing it near to Tetraspora. Each cell is 
provided with two long bristles, one of which is formed after each 
* Bot. Gazette, xvi. (1891) pp. 201-5 (2 pis.). 
t Biol. Centralbl., x. (1891) pp. 10-3. Cf. this Journal (1890) p. 368. 
% Ann. de Micrographie, iii. (1890) pp. 9-21, 62-75, 136-49 (3 pis.). 
§ VIII Congress Russ. Naturf. u. Aerzte; Bot., p. 13, 1890. .See Bot. Centralbl., 
xlvii. (1891) p. 107. 
