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Five new species of Lithospermum L. (Boraginaceae tribe Lithospermeae) in Andean South America : Another radiation in the Amotape-Huancabamba Zone

Title data

Weigend, Maximilian ; Gottschling, Marc ; Hilger, Hartmut ; Nürk, Nicolai M.:
Five new species of Lithospermum L. (Boraginaceae tribe Lithospermeae) in Andean South America : Another radiation in the Amotape-Huancabamba Zone.
In: Taxon. Vol. 59 (2010) Issue 4 . - pp. 1161-1179.
ISSN 0040-0262

Abstract in another language

We present a revision of Lithospermum for South America based on extensive field work and herbarium study which leads to the recognition of ten species including five new to science: Lithospermum bolivariensis, L. cuzcoensis, L. leymebambensis and L. rodriguezii from Peru, and L. azuayensis  from Ecuador. The South American species group is morphologically heterogeneous and includes a wide range of growth forms, pollen types and corolla shapes. Molecular data indicate that the species from Ecuador, Peru and Bolivia are monophyletic (South American species group) and represent the sister group of Mexican L. distichum. Lithospermum mediale, disjunct between Colombia/Venezuela and Guatemala/Mexico, represents an independent introduction to South America. Diversification of Andean Lithospermum appears to have progressed from South to North, with the basal taxa being present in the high Andes of southern Peru. The bulk of the species is concentrated in the Amotape-Huancabamba Zone (northern Peru to southern Ecuador), with five neo-endemic species being restricted to this area. Lithospermum apparently arrived in the Central Andes ca. 5 Ma and subsequently migrated and diversified northwards, possibly parallel to the uplift of the northern Andes.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER141649
Keywords: Trichomes; Corolla; Calyx; Taxa; Biological taxonomies; Anthers; Plants; Gynoecium; New species; Pollen
Institutions of the University: Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 26 Jan 2018 08:10
Last Modified: 18 Sep 2019 09:59
URI: https://eref.uni-bayreuth.de/id/eprint/41492