Université de Neuchâtel

The monophyly and rapid evolution of Gentiana sect. Chondrophyllae Bunge s.l. (Gentianaceae): evidence from the nucleotide sequences of the internal transcribed spacers of nuclear ribosomal DNA

Yuan, Yong-Ming ; Küpfer, Philippe

In: Botanical Journal of the Linnean Society, 1997, vol. 123, no. 1, p. 25-43

The nucleotide sequences of the internal transcribed spacers (ITS) of nuclear ribosomal DNA of 24 representative species of sect. Chondrophyllae s.l. have been determined and analysed phylogenetically, together with some species of other sections of the genus Gentiana. The ITS sequences strongly support the monophyly of the sect. Chondrophyllae s.l. as a whole complex...

Université de Neuchâtel

Chromosomal evolution of Gentiana and Jaeschkea (Gentianaceae), with further documentation of chromosome data for 35 species from western China

Yuan, Yong-Ming ; Küpfer, Philippe ; Zeltner, Louis

In: Plant Systematics and Evolution, 1998, vol. 210, no. 3-4, p. 231-247

Chromosome numbers were recorded for 63 populations of 34 species belonging to the genus Gentiana from the high altitude regions of western China. Counts for 22 species were reported for the first time and new numbers were found for G. heleonastes (2n = 36), G. prattii (2n = 20) and G. pseudoaquatica (2n = 40). Incorporating previous data, a complete series of gametic...

Université de Fribourg

A taxonomic revision of the Pilosella alpicola group in the Carpathians

Šingliarová, Barbora ; Mráz, Patrik

In: Preslia, 2009, vol. 81, p. 23-41

A taxonomic study of the Pilosella alpicola group growing in the Carpathians revealed the presence of two morphologically distinguishable taxa: P. ullepitschii (Błocki) Szeląg and P. rhodopea (Griseb.) Szeląg. While P. ullepitschii is endemic to the Carpathians, P. rhodopea is a Balkan subendemic with two isolated localities in the Southern Carpathians (Mt Cozia and Mt Zmeuretu). The core area...

Université de Neuchâtel

Evolution and biogeography of Balsaminaceae : insights from molecular phylogeny

Song, Yi ; Küpfer, Philippe (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2006 ; 1894.

Balsaminaceae has two genera: Hydrocera with only one species and Impatiens, with over 1000 species. Hydrocera is found in the Indo-Malaysia areas, and Impatiens is highly clustered in tropical Africa, Madagascar, southern India, the eastern Himalayas, Southeast Asia. Only a few Impatiens species are found in the temperate areas of the northern hemisphere. In order to have a better understanding...