Packera lyallii, a Corrected Name for Packera contermina (Asteraceae: Senecioneae)

1 Pages·2002·0.53 MB·English

by  John F Bain

Packera lyallii, a Corrected Name for Packera contermina
(Asteraceae: Senecioneae)
John F. Bain
Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta,
Canada T1K 3M4. [email protected]
Abstract. the new combination Packera lyallii Packera lyallii (Klatt) J. F. Bain. comb. nov. Bas-
(Klatt) J. F. Bain is proposed, based on Senecio lyal¬ ionym: Senecio lyallii Klatt, Ann. K. K. Na-
lii Klatt. turhist. Hofmus. 9: 365. 1894, not Senecio
Key words: Asteraceae, nomenclature, Packera, lyallii Hooker f. Senecio conterminus Green-
Senecio, Senecioneae. man, Ann. Missouri Bot. Card. 3: 101. 1916.
TYPE: Canada. Summit of the Rocky Moun¬
tains, 1861, Dr. Lyall s.n. (holotype, B? not
The segregate genus Packera A. Love & 1). Love seen; isotype, GH).
(= the aureoid Senecio complex) will be recognized
in the upcoming treatment of the Asteraceae for the Following the same rule, the taxon commonly
Flora of North America (North of Mexico). I his treated as Packera streptanthifolia (Greene) Weber
change in treatment has necessitated a number of & Love (based on Senecio streptanthifolius Greene,
recent nomenclatural transfers (e.g., Bain, 1999; a name replacing the later homonym Senecio cym-
Track & Barkley, 1998, 1999). The name change halarioides Nuttall) should hereafter be treated as
proposed herein is necessitated by a recent change Packera cymbalarioides (Nuttall) Weber & Love, a
in the rules of nomenclature contained in the In¬ combination published in 1981.
ternational Code of Botanical Nomenclature (St.
Louis Code) (1CBN) (Greuter et al., 2000). Literature Cited
The publication of the latest ICBN (2000), the
Bain, J. F. 1999. New combinations in Packera (Astera¬
St. Louis Code, introduced a new rule (Article 53.6 ceae) and lectotypification of Packera ovina. Novon 9:
Note 3, Ex. 20) that states that a rejected homonym 457-159.
“remains legitimate and takes precedence over a Greuter, W., J. McNeill, F. It. Barrie, H. M. Burdet, V.
Demoulin, T. S. Filgueiras, I). H. Nicolson, P. C. Silva,
later synonym of the same rank should a transfer
J. E. Skog, P. Trehane, N. J. Turland & I). L. Ilawk-
to another genus (or species) be effected. ’ This sworth (editors). 2000. International Code of Botanical
change has rendered Packera contermina, the re¬ Nomenclature (Saint Louis Code). Regnum Veg. 138.
cent new combination proposed by Bain (1999), su¬ Trock, D. K. & T. M. Barkley. 1998. Seven new nomen¬
clatural combinations and a new name in Packera (As¬
perfluous. The basionym, Senecio lyallii, is legiti¬
teraceae: Senecioneae). Sida 18: 385—387.
mate in Packera according to the new -Si -. 1999. Packera subnuda comb, nov., a
aforementioned rule. I herefore, the following new corrected name for Packera buekii (Asteraceae: Sene¬
combination is proposed: cioneae). Sida 18: 635.
Novon 12: 437. 2002.