84 MEDICAL MYCOLOOY 



Art. 34. When different hybrid forms of the same parentage 

 (pleomorphic hybrids; combinations between different forms of a col- 

 lective species, etc.) are united in a collective group, the subdivisions 

 are classed under the binary name of the hybrid, like the subdivisions 

 of a species under that of a species. 



Examples: x Mentha niliaca /3 Lamarckii (=: M. longifolia x rotundifolia) . The 

 preponderance of the characters of one or other parent may be indicated in the 

 formulae in the following manner : Mentha longifolia > x rotundifolia, M. longi- 

 folia X < rotundifolia. The participation of a particular variety may also be 

 indicated : e. g. Salix caprea x daphnoides var. pulchra. 



§ 7. Names of Plants of Horticultural Origin. 

 Art. 35. Forms and half-breeds among cultivated plants receive 

 fancy epithets, preferably in common language, as different as possible 

 from the Latin epithets of species or varieties. When they can be at- 

 tached to a species, a subspecies or a botanical variety this is indi- 

 cated by a succession of names : e. g. Pelargonium zonMe Mrs. Pollock. 



Section 5. — Conditions of effective Publication. 



Art. 36. Publication is effected, under these Rules, either by sale 

 or distribution of printed matter or indelible autographs to the gen- 

 eral public, or to specified representative botanical institutions*. 



No other kind of publication is accepted as effective : communica- 

 tion of new names at a public meeting, or the placing of names in 

 collections or gardens open to the public, does not constitute effective 

 publication. 



Section 6. — Conditions and Dates of valid Publication of Names (Art. 

 37-45, Rec. XXI-XXIX). 



Art. 37. A name of a taxonomic group is not validly published un- 

 less it is both (1) effectively published (see Art. 36), and (2) accom- 

 panied by a description of the group or by a reference to a previously 

 and effectively published description of it. 



Mention of a name on a ticket issued with a dried plant without a 

 printed or autographed description does not constitute valid publica- 

 tion of that name. 



Note. — In certain circumstances a plate or figure with analyses is accepted as 

 equivalent to a description (vide Art. 43, 44). 



Art. 38. From January 1, 1935, names of new groups of recent 

 plants, the Bacteria excepted, are considered as validly published only 

 when they are accompanied by a Latin diagnosis. 



Art. 39. From January 1, 1912, the name of a new taxonomic group 

 of fossil plants is not considered as validly published unless it is ac- 

 companied by illustrations or figures showing the essential characters, 

 in addition to the description. 



Art. 40. A name of a taxonomic group is not validly published when 

 it is merely cited as a synonym. 



Art. 41. A group is not characterized, and the publication of its 

 name is not validated, merely by mention of the subordinate groups 

 included in it : thus the publication of the name of the order is not 



*The preparation of a list of representative botanical institutions is referied 

 to tlie Executive Committee (see App. VII). 



