Paranephelius (Asteraceae: Liabeae): A case study in high-elevation hybridization and taxonomic insights

Authors

  • Michael O. Dillon Herbario Sur Peruano
  • Mario Enrique Zapata Cruz Office of the Vice Chancellor of Research, Universidad Privada Antenor Orrego
  • Victor Quipuscoa Silvestre Departamento Acade?mico de Biologi?a, Universidad Nacional de San Agusti?n de Arequipa

DOI:

https://doi.org/10.17348/jbrit.v15.i2.1154

Keywords:

Andean Cordillera, Asteraceae, hybridization, Liabeae, Argentina, Bolivia, Peru

Abstract

Paranephelius Poepp. (Liabeae: Asteraceae) is a genus, here comprised of three species confined to high-elevation Andean habitats from 3°–25°S latitude from northern Peru to northern Argentina. In a prior investigation, sequence data was analyzed from samples throughout the range of the genus to evaluate the morphological variation used in delineating species. This detailed sampling allowed for molecular studies at a fine geographic scale. Within Paranephelius, genetic divergence is low, and not adequate to fully resolve phylogenetic relationships at the species level. Two genetically and morphologically recognizable genomes were reveled in northern Peru; these correspond to P. ovatus Wedd. and P. uniflorus Poepp., respectively. Several accessions possess sequences representing putative hybrids between these two species. These putative hybrids have caused taxonomic confusion in establishing species boundaries in Paranephelius. The molecular analysis suggested that P. asperifolius (Muschl.) H. Rob. & Brettell, distributed in Bolivia and northwestern Argentina, is related to P. ovatus, while it most closely resembles P. uniflorus. Species that have changed status include, P. ferreyrae H. Rob., here within the parameters of P. uniflorus; and P. jelskii (Hieron.) H. Rob. & Brettell, P. bullatus A. Gray ex Wedd., and P. wurdackii H. Rob. are here within parameters of P. ovatus. This study is not intended to be a monograph, but does includes a key to species, descriptions, illustrations, and citation of specimens examined.

References

Cabrera, A.L. 1978. Flora de la Provincia de Jujuy. In: Colección Cientifica de INTA; Buenos Aires, Argentina. 10:1–726.
Diers, L. 1961. Der Anteil an Polyploiden in den Vegetationsgürteln der Westkordillere Perus. Z. Bot. 49:437–488.
Dillon, M.O. 2005. Familia Asteraceae. In: Flora genérica de los Páramos: Guía ilustrada de las plantas vasculares, eds. P. Sklenár, J.L. Luteyn, C. Ulloa U., P.M. Jørgensen, & M.O. Dillon, Mem. New York Bot. Gard. 92:96–180.
Dillon, M.O., V.A. Funk, H. Robinson, & R. Chan. 2009. Chapter 27. Liabeae. In: V.A. Funk, A. Susanna, T.F. Stuessy & R.J. Bayer, eds. Systematics, evolution, and biogeography of Compositae. International Association for Plant Taxonomy, Vienna, Austria. Pp. 441–461.
Funk, V.A., H. Robinson, & M.O. Dillon. 1996. Liabeae: Taxonomy, phylogeny and biogeography. In: D.J.N. Hind & H.J. Beentje, eds. Compositae: Systematics. Proceedings of the International Compositae Conference. Royal Botanic Gardens, Kew, UK. 1:545–567.
Funk, V.A., H. Robinson, & M.O. Dillon. 2007. Liabeae (Asteraceae). In: K. Kubitzki & J.W. Jeffrey, eds. The families and genera of vascular plants. Asterales. Springer Verlag, Berlin, Germany. 8:175–180.
Funk, V.A., C. Kelloff, & R. Chan. 2012. Phylogeny and biogeography of the tribe Liabeae (Compositae subfamily Cichorioideae). Taxon 61:437–455.
Hieronymus, G. 1905. Plantae peruviana a claro Constantino de Jelski collectae. Bot. Jahrb. Syst., Pflanzengesch. Pflanzengeogr. 36(5):455–513.
Index Herbariorum. 2016. A global directory of public herbaria and associated staff. New York Botanical Garden's Virtual Herbarium [http://sweetgum.nybg.org/ih/].
JSTOR-Plants. 2021. JSTOR global plants. http://plants.jstor.org/.
Mallet, J. 2007. Hybrid speciation. Nature 446:279–283.
Muschler, R.C. 1913. Compositae peruv. et boliv. II. Bot. Jahrb. Syst., Pflanzengesch. Pflanzengeogr. 50(Beibl. 111):76–108.
Perkins, J. 1913. Beitäge zur Flora von Bolivia. Bot. Jahrb. Syst., Pflanzengesch. Pflanzengeogr. 49(2):170-233.
Poeppig, E.F. & S.L. Endlicher. 1843. Nova genera ac species plantarum, quas in regno Chilensi Peruvian et terra Amazonia: annis MDCCCXXVII ad MDCCCXXXII. Sumptibus F. Hofmeister, 1835–1845. Lipsiae [Leipzig]. 3:1–91. [https://www.bioiversitylibrary/bibliography/453].
Robinson, H. 1977. Studies in the Liabeae (Asteraceae). X. Additions to the genus Paranephelius. Phytologia 35:233–240.
Robinson, H. 1983. A generic review of the tribe Liabeae (Asteraceae). Smithsonian Contr. Bot. 54:1–69.
Robinson, H. & R.D. Brettell. 1974. Studies in the Liabeae (Asteraceae). II. Preliminary survey of the genera. Phytologia 28:43–63.
Robinson, H.E., A.M. Powell, R.M. King, & J.F. Weedin. 1985. Chromosome numbers in Compositae, XV: Liabeae. Ann. Missouri Bot. Gard. 72(3):469–479.
Soejima, A., J. Wen, M. Zapata, & M.O. Dillon. 2008. Phylogeny and putative hybridization in the subtribe Paranepheliinae (Liabeae, Asteraceae), implications for classification, biogeography, and Andean orogeny. J. Syst. Evol. 46:375–390.
Sundberg, S. D., C.P. Cowan, & B.L. Turner. 1986. Chromosome counts of Latin American Compositae. Amer. J. Bot. 73:33–38.
Sundberg, S.D. & M.O. Dillon. 1986. Chromosome reports. Taxon 35:409–410.
THE PLANT LIST. 2013. Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed 21 Nov 2020)
TROPICOS.ORG. Missouri Botanical Garden. 21 Nov 2020 <http://www.tropicos.org>
Turner, B.L., A.M. Powell, & J. Cuatrecasas. 1967. Chromosome numbers in Compositae. XI. Peruvian species. Annals Missouri Botanical Garden 54:172–177.
Weddell, H.A. 1855. Chloris Andina, vol 1. P.Bertrand, Paris, 1–231. doi: 10.5962/bhl.title.217

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Published

2021-12-10

How to Cite

Dillon, M. O. ., Zapata Cruz, M. E. ., & Quipuscoa Silvestre, V. . (2021). Paranephelius (Asteraceae: Liabeae): A case study in high-elevation hybridization and taxonomic insights. Journal of the Botanical Research Institute of Texas, 15(2), 351–376. https://doi.org/10.17348/jbrit.v15.i2.1154