86 MEDICAL MYCOLOGY 



XXIII. When publishing names of new groups of plants in works written in a 

 modern language (floras, catalogues, etc.), to publish simultaneously the Latin 

 diagnoses of recent plants (Bacteria excepted) and the figures of fossil plants, 

 which will make these names valid according to the Eules. 



XXIV. In describing new groups of lower Cryptogams, especially among the 

 Fungi, or among microscopic plants, to add to the description a figure or figures 

 of the plants, with details of microscopic structure, as an aid to identification. 



XXV. The description of parasitic plants should always be followed by the 

 indication of the hosts, especially in the case of parasitic fungi. The hosts should 

 be designated by their Latin scientific names and not by popular names in modern 

 languages, the significance of which is often doubtful. 



XXVI. To give the etymology of new generic names and also of new epithets 

 when the meaning of these is not obvious. 



XXVII. To indicate precisely the date of publication of their works and that 

 of the placing on sale or the distribution of named and numbered plants when these 

 are accompanied by printed diagnoses. In the case of a work appearing in parts, 

 the last published sheet of the volume should indicate the precise dates at which the 

 different fascicles or parts of the volumes were published as well as the number of 

 pages in each. 



XXVIII. When works are published in periodicals, to require the publisher to 

 indicate on the separate copies the date (year and month) of publication and also 

 the title of the periodical from which the work is extracted. 



XXIX. Separate copies should always bear the pagination of the periodical of 

 which they form a part ; if desired they may also bear a special pagination. 



Section 7. — Citation of Authors' Names for purposes of precision 

 (Art. 46-49, Ree. XXX-XXXII). 



Art. 46. For the indication of the name (unitary, binary, or ter- 

 nary) of a group to be accurate and complete, and in order that the 

 date may be readily verified, it is necessary to cite the author who 

 first published the name in question. 



Art. 47. An alteration of the diagnostic characters or of the cir- 

 cumscription of a group does not warrant the citation of an author 

 other than the one who first published its name. 



When the changes have been considerable, an indication of their 

 nature and of the author responsible for the change is added, the 

 words mutatis charact., or pro parte, or excl. gen., excl. sp., excl. var., 

 or some other abridged indication being employed. 



Examples: Phyllanthus L. em. (emendavit) Miill. Arg.; Myosotis L. pro parte, 

 K. Br.; Globularia cordifolia L. excl. var. (em. Lam.). 



Art. 48. When a name of a taxonomic group has been proposed but 

 not published by one author, and is subsequently validly published and 

 ascribed to him (or her) by another author who supplied the descrip- 

 tion, the name of the latter author must be appended to the citation 

 with the connecting word " ex. " The same holds for names of garden 

 origin cited as "Hort." E. g. Capparis lasiantka R. Br. ex DC; Ges- 

 neria Donklarii Hort. ex Hook. 



If it is desirable or necessary to abbreviate such a citation, the 

 name of the publishing author, being the more important, must be 

 retained. 



Where a name and description bj' one author are published by an- 

 other author, the word ai^ud is used to connect the names of the two 

 authors, except where the name of the second author forms part of the 

 title of a book or periodical in which case the connecting word in is 

 used instead. 



