ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
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suit cola, Ascocliyta Nicoti arise, and Oidium Tabaci ; while others — 
Macrosporium commune, Epicoccum purpurascens, and Peronospora Hyo- 
scyami — are found also on other plants. 
Herr E. Rostrup * attributes a very prevalent disease of the beet, 
known as “ heart-rot,” to the attacks of Sporidesmium putrefaciens. He 
finds on the plants affected a pycnid-forra, to which he gives the name 
PJioma sphserosperma, and identifies it as a stage of development of the 
same fungus. A new species — Peronospora Cytisi — is described, which 
causes great ravages in seedlings of the laburnum ; and a leaf-disease of 
Camellia japonica, caused by Pestalozzia Guepini. 
Herr P. Magnus t gives a fuller description of the structure and 
life-history of Peronospora Cytisi. 
Herr P. Dietel J contributes full descriptions of Phragmidium 
deglubens and Bavenalia inornata, both parasitic on leguminous trees. 
Mycorhiza of the Fir.§ — Herr G. Henschel finds the mycorhiza 
only on the roots of young unhealthy fir-trees in Upper Austria ; by 
fur the greater number of the trees, including all the more vigorous 
ones, are entirely free from it. He regards it as injurious rather 
than symbiotic. 
New Genera of Fungi. || — Among a collection of Fungi from Ecuador, 
Herr N. Patouillard and Prof. G. v. Lagerheim describe a new genus 
of Agaricinese with a superior hymene, Bimbachia , with the following 
diagnosis: — Fungi homobasidiosporei, carnosi, erecti, pezizseformes ; 
hymenium leve, nonnullis venis e centro radiantibus reticulatum, et 
paginam superiorem pilei sistens ; pagina externa sterilis, cum stipite 
contigua ; sporae hyalinae. 
Mr. G. Massee describes a new genus DendrograpJiium, which is in 
reality a compound Helminthosporium or a Podosporium with the conids 
in chains ; the conids are coloured and septate ; also another new genus 
Thwaitesiella, separated from Badulum. 
New Luminous Fungus.** — Under the name Pleurotus lux, M. P. 
Hariot describes a new species of luminous fungus from Tahiti, distin- 
guished from other luminous species of the same genus by its smaller 
size, and by belonging to a different section, the “dimidiati.” It is 
found especially in the rainy winter season, and emits at night a light 
similar to that of the glow-worm, and so bright that it is used by the 
native women to illuminate flowers worn for personal adornment. The 
property lasts for about twenty-four hours after the fungus has been 
gathered. 
* Tidsskr. f. Landokonomi, 1891, 17 pp. ; and Gartner-Tidende, 1892. See Bot. 
Centralbl., lii. (1892) p. 186. 
f Hedwigia, xxxi. (1892) pp. 149-51 (1 pi.). 
j Tom. cit., pp. 159-65 (1 pi.). 
§ Vierteljahrsschr. f. Forstwesen, 1892. See Bot. Centralbl., li. (1892) p. 392. 
|| Bull. Soc. Myc. France, vii. (1891) pp. 158-84. See Bot. Centralbl., lii. (1892) 
p. 11. 
t Grevillea, xxi. (1892) pp. 1-6. 
** Journ. de Bot. (Morot) vi. (1892) pp. 41 1-2. 
