March 1907] Notes from Mycological Literature 73 



had four spore-forms. Searching for an adequate cause to ac- 

 count for the breaking up of a primitive species into two or more 

 modern parallel species with different lengths of life-cycle, I think 

 it may be found in the augmented influence of parasitism." 



Mycological Notes. No. 22. C. G. Lloyd. 



This No. issued from Cincinnati, July, 1906, contains the 

 following : Sur quelques rares Gastromycees ; Eastern Stations 

 for Western Plants; A Novelty from Minnesota; The Genus 

 Holocotylon ; Lycoperdon wrightii in Africa and Java; 

 Tylostoma Berteroanum ; Un Mitremyces de la Nouvelle 

 Caledonie (par N. Patouillard) ; Lycoperdon subvelatum in 

 Europe ; Puffballs of Mauritius ; Boudier's Plates. The Novelty 

 from Minnesota is a specimen sent by Dr. S. Whetstone which 

 Mr. Lloyd makes the type of a new genus, namely Whetstonia. 

 The new species is W^h. strobiliformis. The plant is most closely 

 allied to the genus Phellorina, from w^hich it differs in the perma- 

 nent cells of the gleba. 



Hedwigia, Band XLV, Heft 2, 16 Jan. 1906. 



One article in Heft 2, Bd. XLV, Hedwigia, 16 Januar 1906, 

 is mycological, namely : P. Magnus, Notwendige Umaeunderung 

 des Namens der Pilzgattung Marssonia Fisch. [It is changed 

 to Marssonina P. Mag. n. n. and all the species are renamed.] 



Smith, Clayton O. 



During the autumn of 1905 some diseased oleanders were sent 

 from a nursery to the plant pathological laboratory of the Uni- 

 versity of California, says Clayton O. Smith (in October 

 Botanical Gazette, 1905), and this investigator began a study of 

 the olive knob of the specimens, reaching the conclusion that 

 he had to do with "A bacterial Disease of Oleander, Bacillus 

 Oleae (Arcang.) Trev." This trouble affecting the stems and 

 leaves, forming large, hard, woody knobs, occurs in Egypt, 

 Europe and California. It was described by the Romans but its 

 bacterial origin has only been recognized since 1886. 



Atkinson, Geo. F. 



In the Botanical Gazette, October 1906, is given Professor 

 Atkinson's paper on "The Development of Agaricus campestris," 

 (with six splendid plates), which was read last winter at New 

 Orleans. We quote his introductory words as follows : In some 

 respects the history of the study of the Hymeniales does not 

 present the same progress which can be seen in the other groups 

 of fungi, or indeed in nearly all other groups of plants. The 

 earliest period, that of the study and classification of species and 

 genera, presents in the main the same aspects which have been 

 characteristic of the early study of all plants ; but the progress 



