584 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Cultures of Mycosphaerella Fragariae.* — H. C. Schellenberg has 

 confirmed previous results as to the different stages in the life of this 

 fungus ; he took mature ascospores from the leaves of the strawberry 

 and sowed them on gelatine fruit-decoction. As a result he obtained 

 Ramularia conidia. He found the same Ramidaria {B. Ihilasnei), as 

 the summer fruit forms of the fungus, on the leaves of the plant. 

 Infection of new leaves takes place through the stomata. He found 

 also a pycnidial form, Ascochyta Fragarise, which developed during the 

 winter. All diseiised leaves should be collected and burned in 

 early spring. 



Roesleria pallida Sacc.t — A careful study of this fungus has been 

 made by J. Bayliss-Elliott and W. B. Grove. They have also examined 

 and compared the specimens of Pilacre Petersii and F. faginea. In the 

 latter they failed to find any evidence of the basidiosporous state, though 

 clamp connexions were observed ; they considered them to be coni- 

 diophorous fungi without any connexion with Auriculareai or Tremel- 

 linete, and they decide that FiJacre is probably a conidial stage of 

 species of Eccsleria. 



Study of Citromyces.l — This genus was created by Vehmer in 

 1893, to contain certain Hyphomycetes that were able to induce the 

 formation of citric acid in culture media. One of Vehmer's species, 

 Citromyces Ffefferimins, has been studied by Gino Pollacci along with 

 other species of the genus, and on morphological grounds he considers 

 all of them to be species of FeniciUium, and most of them probably 

 synonyms of Fenicilliiim species already known. 



Coniothyrium pirinum Sheldon. § — Elisa Mutto and Gino Pollacci 

 have made cultural studies of the above funijus, and have concluded 

 that it is identical with Coniothyrium tirohnse Bubak, which also occurs 

 on leaves of Firus communis. They have also decided that Fhyllosticta 

 prima is not synonymous with the above two species, the spores being 

 persistently hyaline in all cultures, while the spores of Coniothyrium, 

 though hyaline at first, become brown in time. 



New Species of Endothia.|| — Stephen C. Bruner found the new 

 fungus on the bark of various species of Eucalyptus, generally on that 

 of dead or injured trees. It was cultivated on artificial media (rice and 

 potato agar) and grew well, producing characteristic pycnidia with 

 yellow or orange-yellow spore tendrils. 



Uredineae. — E. B. Mains If cites CoUosporium Solidaginis as one of 

 the heteroecious rusts that persists in districts where the alternate 

 secidial form is not found. By careful examination he found that the 



* Act. Soc. H61v. Sci. Nat., 1915, p. 212. 



t Ann. Bot. xxx. (1916) pp. 407-14 (10 figs.). 



X Atti 1st. Bot. Pavia, xvi. (1916) pp. 121-36 (1 pi.). 



§ Atti 1st. Bot. Pavia, xvi. ^1916) pp. 209-12. 



I! Mvcologia, viii. (1916) pp. 239-42 (1 yl.). 



i Phytopathology, vi. (1916) pp. 371-2. 



