ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
331 
Parasitic Fungi. — Herr C. Schroter * * * § finds, on the diatom Fragilaria 
crotensis var. elongata, but not on the var. curta, in plankton of the Lake 
of Zurich, a parasitic organism, Phizophidium fusus , belonging to the 
Chytridiacete. 
A pine-apple mould is found by Prof. B. D. Halsted f to be com- 
posed of Ohalaria paradoxa, or a closely allied species, characterised by 
producing three different kinds of spore : — hyaline cylindrical micro- 
gonids 4-5 by 16-10 /x, and ovoid olive-brown megaconids 8-9 by 
16—18 /x, together with a third form, resembling the megaconids in 
colour, but the microconids in size. A similar fungus is connected with 
the “ galls ” on the root of the peach. 
The asparagus-rust, Puccinia Asparagi, is described by the same 
writer as becoming very destructive to crops in the United States. It is 
itself largely infested by a fungus parasitic upon it, Darluca filum. 
The green spots on mandarin oranges were found by M. Trabut J to 
be produced by a fungus which he names Septoria glancescens sp. n. It 
produces fermentation of the sugar and of the citric acid, causing the 
peculiar flavour which is a modification of the special perfume. 
On slime from a plane-tree, Herr R. Meissner § finds a new species 
intermediate between Eurotium Aspergillus glaucus and E. repens, which 
he names Eurotium Aspergillus medius. It is characterised by the 
orange-red colour of the older hyphse of the mvcele. 
According to Mr. B. M. Duggar and Mr. L. H. Bailey || the two dis- 
eases of the celery known as “ early blight ” and “ late blight ” are due 
respectively to the attacks of Cercospora Apii and Septoria Petroselini 
var. Apii. 
On the fields of maize in Java, M. Kaciborski % finds a parasitic 
fungus which he names Peronospora Maydis sp. n., causing great de- 
struction to the crops. 
Under the name Trichodytes Anemones g. et sp. n., Herr H. Klebahn** 
describes a parasitic fungus which attacks the glandular hairs of 
Anemone nemorosa. He regards the genus as belonging to the Melan- 
conieae, and nearly related to Gloeosporium and Cylindrosporium. 
Red Yeasts.ft — Miss K. E. Golden and Mr. C. G. Ferris describe 
three red yeasts obtained from the air of the laboratory. Though resem- 
bling Saccharomycetes in appearance, both microscopically and in gross 
growth, they are unable to form true ascospores. Ho. 1 is intermediate 
between Saccharomyces and Torula , in that it forms spore-like bodies, 
though these are not true spores, as they neither form the spore-wall nor 
bud in germinating, It resembles S. rosaceus in the appearance of the 
colonies and in not forming chains. No. 2 is undoubtedly S. glutinis. 
No. 3 is apparently a new species of My coderma, though in general 
appearance it is much like M. Humuli. The latter, however, liquefies 
gelatin, which is decomposed with the production of a foul odour. No. 3 
neither liquefies gelatin nor generates any odour. 
* Arch. Sci. Phys. et Nat , iv. (1897) pp. 474-5. 
f Bull. Torrev Bot. Club, xxiv. (1897) pp. 505-10. 
X Comptes Rendus, exxvi. (1898) pp. 549-50. 
§ Bot. Ztg., lv. (1897) 2*® Abtli., pp. 337-44, 353-7 (12 figs.). 
|| Cornell Univ. Agric. Exp. Stat , 1897, pp. 201-30. 
1 Ber. Deutsch. Bot. Gesell., xv. (1897) pp. 475-8 (1 fig.). 
** Tom. cit., pp. 527-36 (1 pi.). 
tf Bot. Gazette, xxv. (1898) pp. 39-46 (2 pis.). 
