288 SUA1MARY OF CURRENT RESEARCHES RELATING TO 



Ustilago Vaillantiion the flowers of ('liiiniinln.ni Lucilise, also in the 

 Botanic Garden, Edinburgh. The fungus was confined to the anthers 

 of the host-plant. The spores were germinated in water and in plum- 

 decoction. 



Washington Fungi.*— J. G. Hall describes and figures two new 

 fungi from Pullman, Washington. The first, a species of Xrntfio.spon/, 

 grew on dead or dying leaves of Yucca; the second, a Hyphomyrete with 

 peculiar boat-shaped or naviculate spores, grew on dead Juncus stems 

 and was named Tureenia juncoidea g. etsp. n. Hall also describes a 

 fungus that was causing canker on apple-trees in British Columbia, 

 more especially on trees growing in low, poorly drained clay lands along 

 the valley roads. In the cankers, at a later stage, the ascomycetous 

 form was found, a species of Otthia. Cultures were made of the different 

 spores. 



Fungi of Padua.f — L. Gaia continues and completes his review of 

 the fungi of Padua. The present contribution deals entirely with micro- 

 fungi belonging to various classes, Ascomycetes, Fungi Imperfecti, etc. 

 He also adds a list of Mycetozoa. In each case he gives the reference 

 to Saccardo's Sylloge with the habitat and the record of Exsiccati of any 

 Paduan specimens. At the end he lists the workers and the number of 

 forms discovered or collected by each in the different groups. There 

 is also a full index of all the genera. A diagram shows the gradual 

 increase of knowledge of fungi from the year 1718 with two recorded 

 species to 1912 with 1596. 



New Marine Fungi on Pelvetia. }— G. K. Sutherland has discovered 

 several species of microfungi on Pelvetia collected on various parts of 

 the British coasts. The alga forms a belt of vegetation " near the upper 

 reaches of the tidal, and along those outer rocks which project into 

 comparatively shallow water at high tide." They are submerged during 

 high tides for a few hours every day. He finds that Pelvetia possesses a 

 rich fungus flora, and in the case of one symbiotic species suggests, 

 from observations made, that this special Pelvetia may be a lichen. The 

 fungus species in question is Mycosphserella Pelvetise. The mycelium 

 permeates the Pelvetia in all directions without doing visible harm, it 

 finally penetrates the receptacles and forms its perithecia in the outer 

 rind of the receptacles just as the reproductive bodies are being formed 

 in the conceptacles. They rarely appear on the main vegetative body of 

 the host. The spores escape at the same time as the oospores and 

 germinate in contact with them. 



The other three species, also new to science, are parasitic on the 

 thallus. One of them, Pleospora Pelvetise destroys the thallus and thus 

 becomes saprophytic. 



Temperature Relations of Fungi. § — Adeline Ames has been testing 

 the thermal germination and death points of a series of fungi. Monilia 



* Phytopathology (1915) pp. 55-8 (2 pis.). 



t Atti Accad. Sci. Yen. Trent. Istr., xii. (1914) pp. 7-79. 



; New Phytologist, xiv. (1915) pp. 33-42 (4 figs.). 



§ Phytopathology, v. (1915) pp. 11-19. 



