384 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Fungi from Formosa and Japan.* — Papers on the fungi of these 

 countries are published by H. and P. Sydow. From Formosa, which is 

 almost a new territory as regards fungi, a large number of microscopic 

 forms have been determined, most of them species of Uredinea? belonging 

 to different genera, many of them on plants on which rusts have not 

 hitherto been recorded, are listed as new species. A fungus agreeing 

 morphologically with Tnbercularia was found growing on living leaves 

 of Rhois semialata. 



The second paper f deals with fungi from north Japan, also micro- 

 scopic species, many of them Uredineas, of which two forms are new : 

 Gymno sporangium Yamadse, the teleutospore stage having been detected 

 for the first time on branches of Juniperus chinensis ; and Coleosporitim 

 Faurise, a new species ; uredospores and teleutospores are described. A 

 new genus of Pyrenomycetes is described, Nematostoma : the perithecia 

 are beset round the ostiole with long hairs ; the spores are clavate, 

 hyaline to brown, and pluriseptate : the pyenidial form was also found. 

 The fungus was parasitic on leaves of Artemisia. Several new species 

 of Deuteromycetes are also described. 



New Microscopic Fungi.} — H. and P. Sydow describe a series of 

 new forms from East Africa, the Philippine Islands, Brazil, etc. There 

 is one new genus, Theissefiula, a Pyrenomycete which forms a thin 

 subiculum bearing pluricellular coloured conidia and perithecia, with 

 hyaline septate spores and no paraphyses. 



Bubak has given a list of fungi from the Tyrol and Istria, micro- 

 scopic species, many of which are new. Basilocula, a new genus of 

 Melanconiaceas, forms a stroma under the epidermis, from which the 

 conidiophores are developed, bearing filiform continuous hyaline spores. 

 Ogstodendron, a new Hyphomycetous genus with one species, parasitic on 

 the leaves of Quercus lanuginosa ; it forms chains of minute conidia. 

 Piricauda, also parasitic, has acrogenous pyriform very dark muriform 

 conidia. Still another new genus, Verticilliodochium, forms sporo- 

 dochia with subparallel hypha? and verticillate acrogenous sterigmata ; 

 the spores are oblong, simple and hyaline. 



Plant Diseases. — A. Prunet § discusses the fungi that give rise to a 

 straw-blight in France, generally known under the name "pietin." 

 The base of the haulms is invaded and the plant is destroyed. Three 

 different fungi have been found on the diseased stalks — Ophiobolus 

 grammis, 0. kerpotrkhus, and Leptosphseria herpotrichoides. In Central 

 Europe, and more especially in Germany, 0. herpotrichus is chiefly 

 responsible for straw-blight in wheat and barley, while Leptospheerta 

 herpotrichoides produces the disease in rye. It has been stated that oats 

 are immune to Opliiobolus graminis, but may be attacked by 0. herpo- 



* Ann. Mycol., xii. (1914) pp. 105-12. 



t Ann. Mycol., xii. (1914) pp. 158-65. 



J Ann. Mycol., xii. (1914) pp. 203-20 (1 pi.). 



§ Comptes Rendus, clvii. (1913) pp. 1079-81. 



