21-08-2012 09:53
Alessio PierottiThe genus Polystigma was erected by Persoon in 181
16-08-2012 12:27
Stefan BlaserHi allI'm looking for Literature to identify Cosmo
14-08-2012 19:19
Alex AkulovDear FriendsCan you help me with identification of
08-08-2012 11:33
Alessio PierottiQualcuno è tanto gentile da aiutarmi a cercare qu
In PI I found a copy of this sample. The label say: "270. Polystigma rubrum Perso. in Litteris. Xyloma rubrum Pers. Syn. Fung. p. 105. In foliis Pruni domesticae et spinosae, Autumno". The label has no description of the genre but have a reference to a previously and effectively published description or diagnosis: that of Xyloma rubrum Pers. (see: art. 32.1 point D)
In conclusion: the name Polystigma rubrum is valid as Persoon in Mougeot & Nestle, Stirpes Cryptogamae Vogeso-Rhenanae: n. 270. 1812 or as De Candolle, Flore française ed. 3, 6: 164. 1815 ?
PS: sorry for me English...
Another example exists with Boudier's names in the genus Cyathipodia. The genus was validly published in 1907 (Hist. class. Discom. Eur.) but Boudier used this name in the Icones Mycologicae when he published its Liste prélimaire (containing names of the illustrated species) in 1904. All the combinations made in the genus Cyathipodia in this Liste are considered as invalid.