330 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
The mode of germination, both of the conids and of the ascospores, is also 
described. 
Aspergillus developing in Sulphate of Quinine.* * * § — M. F. Heim 
has found in solutions of sulphate of quinine an abundant fungus-mycele 
producing fructifications which show it to belong to the genus Aspergillus. 
He proposes for it the name Aspergillus quininse sp. n. (?) 
Trichosphseria Sacchari.t — Mr. G. Massee describes the life-history 
of this ascomycetous fungus, which is very destructive to the sugar-cane 
in the West Indies. Its life-cycle consists of three stages, the Melan- 
conium. the megaconidial, and the ascigerous stage. The hyphae 
developed from Melanconium-com&s eventually give rise to stout lateral 
branches, which in turn bear apical chains of megaconids (macro- 
conidia). Both forms of conid are produced in chains ; in the chains 
of megaconids the apical one is very large and spherical, while the rest 
are smaller and elliptical ; their mode of formation somewhat resembles 
that of the hormogones of the lower Algae. Although a true parasite in 
its later stages, Trichosphseria almost invariably commences its existence 
as a saprophyte. 
Wrinkle-scurf. i — Hr. J. Muller has studied the fungi which cause 
the diseases known as “wrinkle-scurf” ( Bunzelschorf ), a term hitherto 
confined to those produced by species of Bliytisma , belonging to the 
Hiscomycetes. Of this genus he describes a new species, B. symmetricum , 
on leaves of Sdlix purpurea. B. acerinum, on species of Acer, and B. 
salicinum, on species of Salix, are also described in detail. Besides these 
the author establishes two new genera, Piscomycopsis, for D. rhytismoides 
g. et sp. n., on the maple ; and Diachora, for D. Onobrychidis g. et sp. n., 
on Onobrychis saliva and Bathyrus tuberosus. 
Germination of the TJredineae.§ — Mr. C. A. Carleton describes a 
series of experiments on the germination of these fungi, especially on the 
effect of different chemicals, and on the vitality and vigour of the summer 
spores. He also records the occurrence of a new form of sporid, 
catenulate instead of pedicellate, in three species, Puccinia Grindelise, 
P. variolans, and P. Sporoboli. 
Nuclear Division in the Hymenomycetes.| — Mr. H. Wager has 
studied the phenomena connected with the division of the nucleus in 
the cells of the Hymenomycetes, especially in the basids, where they are 
unusually large. The species examined were Agaricus stercorarius and 
A . muscarius. 
The young basids contain a single nucleus formed by the fusion of 
two or more pre-existing nuclei. The structure of the nucleus is similar 
to that in the higher plants ; it possesses a nuclear membrane, nucleole, 
and granular network. On staining with carmine and nigrosin the 
network becomes blue, the nucleole a deep reddish purple. The mode 
of division of the nucleus is karyokinetic, resembling generally that 
which takes place in the higher plants, but with slight differences of 
* Bull. Soc. Mycol. France, 1893, p. 239. See Bot. Centralbl., lvii. (1894) p. 239. 
t Ann. Bot., vii. (1893) pp. 513-52 (1 pi.). 
X Jahrb. f. wiss. Bot. (Pringsheim). xxv. (1893) pp. 607-27 (3 pis.). 
§ Bot. Gazette, xviii. (1893) pp. 447-57 (2 pis.). 
|| Ann. Bot., vii. (1893) pp. 4fc9-514 (3 pis.). Cf. this Journal, 1892, p. 654. 
