348 SUMMARY OF CURRENT RESEARCHES RELATING TO 



claimed that Lolium was non-poisonous. Hackel considers that Wilson 

 was dealing with plants that did not contain the fungus, and that 

 additional proof is thus afforded that the harmfulness of Lolium temu- 

 lentum is entirely due to the fungus which lives symbiotically in the 

 seed. 



Plant Diseases. — P. Kulisch * publishes an account of a severe 

 attack of Peronospora on the vine and more especially on the grapes. 

 He considers that spraying was delayed too long. 



J. Gallaud f records the mischief done to the coffee plant in New 

 Caledonia by the fungus Pellicularia. It grows on the stem, leaves, 

 flowers, or fruit, and forms a thin close pellicle of creeping, anasto- 

 mosing hyphas, which bear globose echinulate spores. It is a very serious 

 disease, but as it is entirely superficial it is thought that a liberal use of 

 fungicides would keep it under if not destroy it altogether. The name 

 given to the disease is " Koleroga," or " Candellilo." 



Mycological Notes.J — Franz v. Hohnel continues his description of 

 new species and his notes and corrections of species already known. He 

 considers Boletus luteus and B. granulatus identical, the latter differing 

 only in the want of the ring. He finds that Didymosphceria conoidea is 

 always parasitic in the perithecium of another Pyrenomycete, Lepto- 

 sphceria Doliolum. After careful examination he concludes that Phyllo- 

 sticta Lysimachice is a development form of Ramularia Lysimachice ; 

 he has found them growing intimately together. Stilbum byssinum, 

 on account of its branched conidiophores, should be placed in the genus 

 Dendrostilbella. The genera Myrothecium and Volutella are compared : 

 there is much confusion among species of these and allied genera. 



Yon Hohnel describes one new genus, Lentomitella, distinguished 

 from Lentomita by markings on the spores. 



Microfungi of G-alls.§ — A. Trotter distinguishes three types of fungi 

 associated with insect galls — saprophytic fungi, antibiotic fungi, and 

 symbiotic fungi. The saprophytic forms grow on the galls or on 

 neighbouring tissues ; in some cases they are probably biologic forms that 

 find their peculiar sustenance only on galls. The antibiotic fungi live 

 usually on the surface of the galls and are mostly parasitic, as for 

 instance, Glozosporium gallarum, Tricothecium roseum, and Uredo subcor- 

 ticium. The Erineum group of galls are especially subject to parasitic 

 growths of fungi, such as Alter naria, Penicillium, Aspergillus, etc. 

 Marsonia Populi was found growing luxuriantly in the interior of a gall. 

 Here also, as with the saprophytic forms, the tissues of the gall may be 

 peculiarly suitable for certain fungi. In some cases the fungus attacks 

 the larvae, and it has been observed that a poor season for fungi is 

 followed by a season rich in gall-production. The symbiotic group of 

 fungi live also in the tissues of the gall, but seemingly without doing 

 any harm to the structure. It is probable that the fungus takes 

 advantage of the secretions or excretions of the insect. Such a fungus 



* Naturw. Zeitschr. Land. Forstw., iii. (1905) p 390. See also Bot. Centralbl., 

 ci. (1906) p. 128. f Comptes Rendus, cxli. (1905) pp. 898-900. 



t Ann. Mycol., iii. (1906) pp. 548-60 (6 figs.). 

 § Tom. cit., pp. 521-7 (8 figs.). 



