60 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
of Puccinia sylvatica and P. sessilis. A number of other “ species sorores ” 
•are also included in the same cycle of development. 
Herr P. Magnus * * * § describes a new species of Cintradia, C. Seymour - 
iana, parasitic on Panicum crus-galli in N. America. 
Prof. M. Shirai f describes four new species of Exobasidium from 
Japan, viz.: — E. Camellise, parasitic on Thea japonica , E. japonicum on 
Phododendron indicum, E. hemisphsericum on P. Metternichii , and E. pen- 
tasporium on P. indicum. 
A common disease of the Lombardy poplar is attributed by M. P. A. 
Hangeard J to a different cause from that assigned to it by MM. Vuille- 
min and Prillieux. He finds on the living branches a species of Cali- 
cium , C. populneum, belonging to a genus usually placed among the 
Lichens, but here wanting its algal constituent, and therefore carrying 
on a parasitic existence on the living tissues. On the young roots he 
found also an undescribed species of Chytridiaccte, which he names 
Phizophagus populinus. 
Herr K. Starback § describes the development of Sphserulina halophila, 
belonging to the Pyrenomycetes, parasitic on the leaves of Heliantlius 
peploides. 
Saceharomyces guttulatus Hob.|] — Dr. L. Buscalioni describes the 
structure and life-history of this species, found in the intestinal canal 
of rabbits and other herbivora. He finds it to be a true Saccharomycete, 
capable of multiplication by spores and by gemmation. It is furnished 
with a nucleus which divides during the processes both of gemmation and 
sporulation. The mode of nuclear division is very different from that 
observed in other fungi, and appears to resemble more or less that which 
takes place in certain Algos ( Valonia, Godiuni). The process is probably 
one of karyokinesis, greatly reduced during sporulation, and of fragmen- 
tation during gemmation. The mode of life of Saceharomyces guttulatus 
is parasitic, or at least endophytic. 
Fertilisation of the Uredinese.l — M. Sappin-Trouffy repeats his ob- 
servations on this process, and points out that the reduction in the num- 
ber of the chromosomes and in the chromatic substance is a phenomenon 
of impregnation both in flowering plants and in the Uredinese ; but that in 
the latter it takes place after, instead of before, fecundation. The result 
is the same. The “ egg ” (oosperm) in both cases preserves the proper- 
ties of the species, and transmits them in their integrity to the descend- 
ants with the same number of chromatic elements. 
Development of iEcidia.** — Mr. H. M. Kichards has studied the de- 
velopment of the aecidia of the Uredineae, especially that of Uromyces 
Galadii. He states that the hymenium is formed by budding from seve- 
ral fertile primary filaments. The basids are produced especially on the 
* Tom. cit., pp. 216-21 (1 pi.). 
t Bot. Mag. (Tokyo), x. (1896) pt. ii. pp. 51-4 (1 pi.). 
X Le Botaniste (Dangeard), v. (1896) pp. 38-43. Cf. this Journal, 1889, p. 681. 
§ Bih. K. Svensk. Yet. Ak. Hand!., Afd. iii. 1896 (1 pi.), See Hedwigia, xxxv. 
0896) Rep., p. 115. \\ Malpigliia, x. (1896) pp. 281-327 (1 pi.). 
If Le Botaniste (Dangeard), v. (1896) pp. 32-7 (1 tig.). Cf. this Journal, 1S96, 
p. 342. 
** Proe. Amer. Acad. Arts and Sci., xxxi. (1896) pp. 255-70 (1 pi.). See Bot. 
Centralbl., lxviii. (1896) p. 87. 
