420 SUMMARY OF CUKRENT RESEARCHES RELATING Tt) 



after they fall ofF. Secondary sj)oridia are formed, after the fusion, and 

 these germinate and may develop tertiary uninucleate sporidia. The 

 hyphas in the early stages of infection of wheat seedlings are uninucleate 

 or multinucleate. A. L. S. 



Contribution to the Knowledge of Tuscan UredinesB. — Martino 

 Savelli {Nuovo Glorn. Bot. Itiil., 1916, 23, 236-59). The author of 

 the list collected most of the plants himself, but he has also availed 

 himself of collections existing in herbaria. Localities and hosts of the 

 various life stages are given, and, in many instances, biological notes 

 are added. A. L. S. 



Cultural Study of Puccinia Opizii. — Eug. Mayor {Bidl. Soc. 

 Mycol. France, 1920, 36, 97-100). Inoculation experiments to determine 

 the members of the Compositai that could function as host to Pucrinia 

 Opizii. The writer obtained necidia on four genera and thirteen species. 

 A list is given of species in which no infection took place. A. Li. S. 



Genus Kunkelia. — Fernand Moreau {Bull. Soc Mycol. France, 

 1920, 36, 101-8). The genus was based by Arthur on a Uredine 

 which forms tecidia on Ruhus, and the spores of which produce directly 

 a promycelium and sporidia. Kunkel had considered this short life- 

 cycle as characteristic of southern forms of Uredines. Moreau takes up 

 the question and discusses whether it may not be merely a " shortened " 

 form of Gymnoconia interstitialis on the same host. Moreau along with 

 Madame Moreau have argued that Uredines with similar shortened cycles 

 (such as Endoplbyll am) are derived from those of normal development, 

 and that shortened cycle forms may be found in other genera in southern 

 regions. A. L. S. 



■'o' 



Experimental Study of Melampsora abieti-caprearum. — Eug. 

 Mayor {BaTl. Soc. Mycol. France, 1920, 36, 191-203, 5 figs.). The 

 study was undertaken to determine the hosts of this species. Mayor 

 found by inoculations, etc., that pycnidia and cajomata grew on Ahies 

 pectinata, A. Pinsapo and var. glavca, A. nomianmanaand A. ceplialonica. 

 Uredospores and teleutospores grew naturally on Salix Caprea, but he 

 was able to infect also S. aarita, S. cinerea, S. incana, S. purpurea and 

 S. viminalis. A. L. S. 



Investigations of Cronartium ribicola in 1920. — L. H. Penning- 

 ton, W. H. Snell, H. H. York and Pehley Spaulding {Phytopatho- 

 logist, 1921, 11, 170-2). Investigations in the field were carried out by 

 the authors of the note. Two points were brought out which are 

 specially important. Ribes are often entirely killed out in a district, 

 and breaking of the quarantine has resulted in outbreaks of the rust. 

 Previous conclusions that a^ciospores may be blown an indefinite number 

 of miles and cause infection are borne out by the present investigation. 



A. L. S. 



Notes on the Uromyces of Astragalus and Cytisus.— F. Kobel 

 {Ann. Mycol., 1921, 19, ]-l(!, 3 figs.). The author made a series of 

 inoculation experiments with three species on Astragalus, native to 



