110 SUMMARY OF CURRENT RESEARCHES RELATING TO 
Parasitic Fungi. — On Betula verrucosa, Herr F. Thomas* * * § finds a 
new species of Exoascus, E. Janus sp. n., intermediate between E. bac- 
triospermus and E. carneus. 
M. E. Roze f asserts that it is rare to find corms of Crocus sativus 
or verms entirely free from the attacks of parasitic fungus, including a 
Bhizoctonia and a Pseudocommis. In addition to these, he finds very 
frequently a Saccharomyces which he regards as a new species, and names 
SaccJiaromyces Croci sp. n. It propagates by budding, and each cell con- 
tains a single spore. The diameter of the cells varies between 6 and 2 p. 
A disease which is very destructive to the Weymouth pine ( Pinus 
Strobus ) is described by Prof. E. Scholz t as due to the attacks of a 
hitherto undescribed fungus, Bhizoctonia Strobi, of which, however, only 
the mycele is at present known. It differs from Agaricus melleus in the 
absence of rhizomorphs, and it has no underground form. 
Sig. G. Pollacci § records the following new species : — Macrosporium 
Violse on Viola odorata ; Belminthosporium Iberidis on Iberis ; H. Lunarise 
on Lunaria biennis ; Leptothyrium parasiticum on Cereus stellatus and 
C. triangularis ; Cystosporella Cerei on C. stellatus ; Pirostoma Farneti- 
anum on Pandanus utilis ; Phyllosticta Dammarse on Dammara Moorei. 
Herr G. Lindau jj records the destruction of immense numbers of 
the larva of Porthesia chrysorboea by Empusa Aulicse, and describes in 
detail the life-history of the parasite, which varies from other species of 
the genus in the mycele occasionally breaking through the body of the 
host, while it differs from the true Entomophthorse in never forming 
attachment-hyphfe. 
M. H. Nomura % attributes a common disease of the silkworm co- 
coon in Japan to the attacks of Aspergillus flavus and A. glaucus. 
The disease of snowdrops is, according to M. C. A. J. A. Oudemans,** * * §§ 
due to the parasitic fungus Botrytis galantliina, of which Sclerotinia Gal- 
anthi is the sclerote-form ; and that of the peony to Botrytis Pseonise sp. n. 
Mr. W. P. G. Ellis ft finds diseased tomatoes from Jersey to be at- 
tacked by associated fungi and bacteria, the fungus being identified with 
Mucor stolonifer. 
Disease of the Tobacco Plant due to Thielava basicola.Jf — Dr. V. 
Peglion records the occurrence of a disease affecting the tobacco nurseries 
of Italy. The disorder begins in the roots, and rapidly affects the whole 
of the plant. Microscopical examination of the black putrid parts dis- 
closed the presence of Thielava basicola Zopf, a fungus belonging to 
the family of Perisporiaceae, and parasitic on other cultivated plants. 
Puccinia Lojkajana.§§ — Sig. C. Avetta has found this rare fungus 
parasitic on species of Ornithogalum, and notes the singular fact of the 
* Forstl.-natur. Zeitschr., 1897, pp. 305-14. See Bot. Ztg., lv. (1897) 2 te Abth., 
p. 329. f Comptes Rendus, cxxv. (1897) pp. 730-2. 
t Yerhandl. K. K. Zool.-Bot. Gesell. Wien, xlvii. (1897) pp. 541-57 (6 figs.). 
§ Atti 1st. Bot. Univ. Pavia, v., 8 pp. and 1 pi. See Bot. Centralbl., lxxii. (1897) 
p. 184. || Hedwigia, xxxvi. (1897) pp. 291-6 (11 figs.). 
If Tokyo Bot. Mag., 1897, p. 31. See Hedwigia, xxxv. (1897) Rep., p. 138. 
** Kon. Akad. Wetenscli. Amsterdam, 1897, p. 455 (1 fig.). See Hedwigia, xxxv. 
(1897) Rep., p. 138. 
ft Rep. Brit. Ass., 1897 (Toronto). See Nature, Ixv. (1897) p. 601. 
tt Centralbl. Bakt. u. Par., 2 te Abt., iii. (1897) pp. 580-3. 
§§ Malpighia, xi. (1897) pp. 236-40. 
