Author: von Raab-Straube, Eckhard

Source: Willdenowia - Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem, Volume 33, Number 2, December 2003 , pp. 379-402(24)

Publisher: Botanic Garden and Botanical Museum Berlin-Dahlem

Abstract:

DNA sequences from the nuclear ribosomal ITS and from the chloroplast trnL-trnF regions of 47 species of all six subgenera and 13 sections of Saussurea were analysed. The cladogram resulting from ITS sequence data indicates that Saussurea in its present circumscription is paraphyletic. S. sect. Elatae and S. subg. Jurinocera together are sister to the genus Jurinea. The affinities of S. subg. Frolovia are unclear, while representative species of the remaining four subgenera and ten sections form a strongly supported monophyletic group. Within this clade, the delimitation of S. subg. Eriocoryne and S. subg. Amphilaena against S. subg. Saussurea is not evident. The trnL-trnF intergenic spacer sequences show a remarkable synapomorphy, a 21bp insertion, for Jurinea cyanoides, S. deltoidea, S. ceratocarpa and S. frolovii, supporting the paraphyly of Saussurea. These results correspond to differences in morphological characters of achenes and pappus, which also suggest that S. sect. Elatae, S. subg. Jurinocera and S. subg. Frolovia are not closely related to the remainder of the genus. Consequently, S. sect. Elatae is separated as the new genus Himalaiella, and the small generic segregates Frolovia and Lipschitziella are resurrected. A synopsis of these three genera is presented and the new combinations Himalaiella abnormis, H. afghana, H. albescens, H. auriculata, H. chenopodiifolia, H. chitralica, H. deltoidea, H. foliosa, H. heteromalla, H. nivea, H. peguensis, Frolovia frolovii and F. gorbunovae are validated.

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Document Type: Research article

Publication date: 2003-12-01

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• Willdenowia is a peer-reviewed botanical journal with an international authorship, publishing original research papers in English from the entire fields of plant, algal and fungal taxonomy and systematics, also covering related fields. Its precursor was founded in 1895 as Notizblatt des Königlichen Botanischen Gartens und Museums zu Berlin and 1954 continued with its present title commemorating Carl Ludwig Willdenow, 1765-1812, director of the Botanic Garden, first professor of botany in Berlin and author of the fourth edition of Linne's Species Plantarum. Willdenowia appears in two issues per year in a print edition and an open access online edition.
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