414 SUMMARY OF CUERENT RESEARCHES RELATING TO 



receive attention. There is a discussion on Seismosarca^ which he thinks 

 may be the same as Exidiopsis of Moeller. Gijdomyces Greenii from Japan 

 is another rare plant which is fi2;ured ; in it the gills are concentrically 

 arranged. Several species of XyJaria are also figured and commented 

 on. In Note No. 46 many Gasteromycetes are recorded. Special atten- 

 tion is given to MesopheUki, an Australian genus of Lycoperdaceaj with 

 hard core. Diploderma, an allied genus, has an inner hard peridium, but 

 no hard core. Arachnion, a very rare genus, has been sent to Lloyd from 

 South Africa ; it has a thin peridium, which makes it a very fragile 

 fungus difficult to preserve. There are now several species irom South 

 Africa, America, and Austraha. 



Spanish Fungi.* — A descriptive "compendium" of Spanish plants 

 is in course of publication by Bias Lazaro e Ilaiza. In the first volume the 

 Fungi are dealt with along with other classes. Ibiza gives a short 

 sketch of the nature and habitat of Fungi, Avhich he divides into two 

 sub-classes : Myxomycetes and Hypodermete, or Fungi proper. He 

 begins with Ustilaginese and Uredineje, then Basidiomycetes, and 

 Ascomycetes with which are incorporated the Fungi Imperfecti, and 

 he winds up with the Phycomycetes. The Spanish genera and species 

 are described, and a clavus to the genera is given. A number of forms 

 are figured. 



'to^ 



Fungi and Lichens from Somali-Land. f — The botanical collec- 

 tion made during the Stefanini-Paoli Expedition to Italian Somali- 

 Land has been dealt with by systematic botanists, and included 

 therewith are a number of fungi and lichens. The fungi, all 

 of them Eumycetes, have been worked out by P. Baccarini. The list 

 includes a number of neAv species belonging to Tulostoma Lentiiius, 

 Fholiota, Polyporus, and Fomes among the larger forms, while in the 

 more . microscopic sections there are new Uredineee, Sphaeriaces, 

 HysteriaceaB, etc. The list of lichens is compiled by C. Zanfrogini. 

 They comprise Graphideae, Usneacese, etc. 



* 



Experimental Study of Fungi. J — B. M. Duggar and A. M. Davis 

 have studied a series of Microfungi to test their capacity for nitrogen 

 fixation which has been repeatedly affirmed or denied by various 

 workers. Previous work on the subject is passed in review, and the 

 methods, old and new, are described. The results gained in the present 

 research are carefully tabulated. The authors could not demonstrate 

 fixations in Aspergillus niger, Ifacrosporium commune, Penicillium 

 digitatum, P. expansum, and Glomerella Gossypii. In most of these 

 fixation had been proved, but only of very small quantities of nitrogen. 

 They were more successful with Plioma Betse on cultures of mangold, 

 and on sugar-beet decoction with sugar they found a nitrogen gain. 



* Bot. Descr. Comp. Fl. Esp., i. (]Madrid. 1906) pp. 280-427 (100 figs.). 

 + Le Coll. Bot. Miss. Stef.-Paoli, Somalia Italiana (Fireuze, 1916) pp. 189-200 

 and 228. 



X Ann. Miss. Bot. Gard., iii. (1916) pp. 413-37. 



