DIVISION II. RULES AND RECOMMENDATIONS
CHAPTER IV. EFFECTIVE AND VALID PUBLICATION
SECTION 3. AUTHOR CITATIONS
49.1. When a genus or a taxon of lower rank is altered in rank but retains its name or the final epithet in its name, the author of the earlier, name- or epithet-bringing legitimate name (the author of the basionym) must be cited in parentheses, followed by the name of the author who effected the alteration (the author of the new name). The same provision holds when a taxon of lower rank than genus is transferred to another genus or species, with or without alteration of rank.
Ex. 1. Medicago polymorpha
L. (1753) when raised to the rank of species becomes
(L.) Bartal. (1776).
Ex. 2. Anthyllis
DC. (Prodr. 2: 169. 1825) raised to generic rank, retaining the epithet
as its name, is cited as Aspalathoides
(DC.) K. Koch (1853).
Ex. 3. Cineraria
Dumort. (Fl. Belg.: 65. 1827) when transferred to
(Rchb.) Rchb. is cited as T.
(Dumort.) Holub (in Folia Geobot. Phytotax. 8: 173. 1973).
Ex. 4. Cistus aegyptiacus
L. (1753) when transferred to
Mill. is cited as H. aegyptiacum
(L.) Mill. (1768).
Ex. 5. Fumaria bulbosa
L. (1753) was elevated to specific rank as
(L.) Mill. (1771). The name of this species when transferred to
DC. is to be cited as C. solida
(L.) Clairv. (1811), not
However, Pulsatilla montana
W. Zimm. (in Feddes Repert. Spec. Nov. Regni Veg. 61: 95. 1958), originally placed under
(Heuff.) Zämelis, retains the same author citation when placed under
Rummelsp. (see Art.
) and is not cited as var.
"(W. Zimm.) Rummelsp." (in Feddes Repert. 71: 29. 1965).
Ex. 7. Salix
C. K. Schneid. (Ill. Handb. Laubholzk. 1: 63. 1904), originally placed under
W. D. J. Koch, retains the same author citation when placed under
Pax and is not cited as S.
"(C. K. Schneid.) Dorn" (in Canad. J. Bot. 54: 2777. 1976).
Parenthetical authors are not to be cited for suprageneric names.
Even though Illiciaceae
A. C. Sm. (1947) was validly published by
reference to Illicieae
DC. (1824) it is not to be cited as Illiciaceae
“(DC.) A. C. Sm.”
Art. 46.6 provides for the use of parenthetical author citations preceding the word "ex", after some names in groups with a starting-point later than 1753.
2006, by International Association for Plant Taxonomy. This page last updated