702 SUMMARY OF CURRENT RESEARCHES RELATING TO 



"Notes on Cases of Poisoning by Fungi * — These notes are con- 

 tributed by M. Boue and M. Demange. Boue experienced symptoms 

 of poisoning after eating Amanita junquillea. Demange made inquiries 

 as to harmful fungi in Tonkin, and found that the species in question 

 was Hygrophorus conicus. Of six persons attacked, four died from the 

 effects of the poison ; two others responded to treatment and recovered. 



Outlines for the Observation of some of the more Common Fungi.j 

 G. F. Atkinson gives directions to beginners in mycology for the collec- 

 tion and study of various fungi. The present part deals with poisonous 

 and edible Agarics, Polyporei, Clavarias, and some Ascomycetes. 



Spread of Fungus Diseases by means of Hibernating Mycelium. f 

 A paper on this subject has just been issued from Kew. Well-known 

 cases of hybernating mycelium are cited, such as potato disease which 

 is carried over in the tubers, darnel grass, and others. An account 

 is given of experiments proving the influence of weather and tempera- 

 ture on the spread of fungus diseases : potato tubers infected by 

 Phytophtliora were planted in pots and kept, some in damp warm condi- 

 tions, others in a dry cool atmosphere. The latter showed no sign of 

 disease after many weeks ; the former had all succumbed sooner or later. 

 The writer insists on the danger of using seed, tubers, bulbs, etc., pro- 

 duced in an infected area, in the case of plants known to be capable of 

 perpetuating a disease by means of hybernating mycelium. 



American MycologvJ — W. A. Kellerman gives an account of a 

 botanical trip to Central America for the purpose of collecting parasitic 

 fungi. He describes the climate, topography, vegetation, etc., of the 

 different places visited, indicating where fungi were most prevalent. A list 

 of fungi is promised. 



Vera K. Charles || has found that a disease of Theobroma, which 

 resulted in the rotting of the pods, was due to Lasiodiplodia, probably 

 L. tuberkola, but that is not yet ascertained. 



G. G. Hedgcock and Percy Spauldinglf have invented a method of 

 mounting microscopic fungi for the herbarium. They are grown on 

 agar-agar ; the culture is then transferred to a card and allowed to dry, 

 and finally covered with a perforated piece of cardboard of varying 

 thickness. 



J. C. Arthur** desires a new classification of the Uredinales. He 

 claims that the various stages in the life-cycle should be recognised in 

 nomenclature, and points out the anomaly of ignoring the jfficidium, 

 which is the sexual stage. 



A. P. Morganft commences an account of the North American species 

 of Lepiota, of which some 80 species have been enumerated. .Morgan 

 gives diagnoses of 12 species. 



The same writer %\ publishes " Descriptive Synopses of Morgan's 



* Bull. Soc. Mycol. Prance, xxii. (1906) pp. 227-32. 

 t Plant World, viii. (1905) pp. 245-55. 

 $ Journ. Board Agric, xiii. (1906) pp 257-64. 



$ Journ. Mycol., xii. (1906) pp. 137-45. || Tom. cit., pp. 145-6. 



i Tom. cit., p. 147. | ** Tom. cit., pp. 149-54. 



tt Tom. cit., pp. 154-9. %% Tom*, cit., pp. 159-62. 



