NOTES AND MEMORANDA. 



Journal of Cryptogamic Botany.— Mr. M. C. Cooke, the well- 

 known mycologist, announces his intention, if the names 

 of a sufficient number of subscribers can be obtained, to issue 

 monthly a small journal, with illustrations, devoted abso- 

 lutely to Cryptogamic Botany. It will serve as a sort of 

 Appendix to the Lichen and Fungi Floras recently published, 

 by recording and describing new species as they are found. 

 Although British Cryptogamia will occupy the first place, it 

 is intended to record from time to time what is doing abroad 

 in all the Cryptogamic families (except ferns), and to keep 

 the student acquainted Avith what is being published in 

 foreign countries as well as his own. Monographs of genera 

 and families, critical observations on species, and all kindred 

 subjects, will receive attention. The co-operation is pro- 

 mised of the Rev. W. A. Leighton, Dr. Lauder Lindsay, Dr. 

 Braithwaite, F. Kitton, and other specialists. 



Hop Mould. — A new mould has made its appearance during 

 the past autumn on the spent hops so common about Bur- 

 ton-on-Trent. It formed large dense patches of a bright 

 salmon colour, sometimes several inches in length and 

 breath, upon the sombre hops, and could not have escaped 

 notice had it appeared in previous years. The structure of 

 this mould seems to be closely allied to that of Oidium, 

 Avhilst in many respects it reminds one of Sporendonema casei. 

 The creeping mycelium gives rise to branched threads, which 

 become divided into strings of oval conidia or spores. The 

 mould refuses to develop itself artificially, so that the mode 

 in which the beaded spores were produced was not abso- 

 lutely determined. Directly the threads come in contact 

 with fluid of any kind they are resolved into a mass of oval 

 cells or spores. Specimens of this mould have been published 

 and distributed in Cooke's ' Fifth Century of British Fungi ' 

 under the name of Oidium aiirantium, a rather unfortunate 

 specific name, since another member of the same genus 

 which appeared nearly simultaneously on the Continent has 

 been called Oidium aurantiactcm. — (M. C. C, in Nature.) 



