Open Access Open Access  Restricted Access Subscription or Fee Access

Nomenclature and taxonomic notes on the controversial species Cacalia senecioides (Compositae)

Joel Calvo

Abstract


The taxonomic interpretations of Cacalia senecioides Kunth in Humboldt et al. (1818: 129) changed over time and depending on the authors because the original material is not well preserved and not enough taxonomically informative. In the mid-19th century, Weddell (1856) already noticed: “Les échantillons qui représentent cette espèce dans l’herbier de Humboldt et Bonpland sont en mauvais état; mais leur examen a suffi pour me convaincre que la description de Kunth est très défectueuse” [Humboldt & Bonpland’s specimens of C. senecioides are in bad condition; but after studying them I am convinced that Kunth’s description is very imperfect]. Certainly, Kunth’s description does not allow to unequivocally identify this species and the description of the indumentum of the leaves is inaccurate. Nevertheless, he pertinently described the leaves as “reticulate-venosa”. In my opinion the reticulate leaves is a useful character to discriminate C. senecioides from other species that might fit in the description, at least on dry specimens.


Keywords


Senecio; Lasiocephalus; Asteraceae; Compositae; Nomenclature; Typificationudicots; Eudicots

Full Text:

PDF (279KB)


DOI: http://dx.doi.org/10.11646/phytotaxa.245.3.7

Refbacks

  • There are currently no refbacks.


ISSN 1179-3155 (print); ISSN 1179-3163 (online)

Published by Magnolia Press, Auckland, New Zealand