A phylogeny of the tribe Caraganeae (Fabaceae) based on DNA sequence data from ITS

Abstract

A new subtribal classification of the Fabaceae‐Caraganeae is presented informed by phylogenetic reconstruction using the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA (nr DNA) for 17 genera belonging to tribes Caraganeae, Galegeae and Astragaleae. Based on these results we propose to erect a new subtribe Chesneyinae Ranjbar, F. Hajmoradi and Waycott including Chesneya Lindl. ex Endl. and Guelden‐staedtia Fisch. and revise the membership of subtribe Caraganinae as comprising Caragana Fabr., Calophaca Fisch. and Halimodendron Fisch. ex DC. Subtribe Caraganinae is characterised by the shrub habit and paripinnate leaves whereas the herbaceous habit and imparipinnate leaves are characteristic of subtribe Chesneyinae. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

A molecular phylogeny of Caraganeae (Leguminosae, Papilionoideae) reveals insights into new generic and infrageneric delimitations

“…100 species distributed in temperate Asia, extending to eastern Europe (Ranjbar and Karamian 2003; Lock 2005). The two subtribes (Caraganinae and Chesneyinae) recognized by Ranjbar et al (2014) are each well-supported in our analyses. However, our results did not recover a monophyletic Caraganeae (Figs 1, 2).…”

“…We included 101 accessions, covering 97 species, containing 39 species of Caraganinae (represented by Calophaca , Halimodendron and all 5 sections of Caragana according to Zhang 1997) and 40 accessions (36 species) of Chesneyinae (including Chesneya , Chesniella , Gueldenstaedtia and Tibetia , tentatively treating Spongiocarpella in Chesneya , which were more comprehensively sampled than previous studies [Ranjbar et al 2014; Duan et al 2015; Zhang et al 2015b]). 82 new sequences were generated in this work.…”

“…ex DC., numbers of genera may be altered when treated by different workers (see below). Caraganeae ranges from eastern Europe, central and western Asia to Mongolia, China and the Himalayas, extending northward to Siberia (Lock 2005; Ranjbar et al 2014). This tribe is diagnosed by the asymmetrical axillary peduncles or pedicels attached to the slightly gibbous calyx and dehiscent pods (except for Halimodendron ; Polhill 1981; Ranjbar and Karamian 2003; Ranjbar et al 2014).…”

“…Molecular work of Ranjbar et al (2014) classified Caraganeae into two subtribes: Caraganinae and Chesneyinae Ranjbar, F. Hajmoradi & Waycott. Duan et al (2015) recognized this tribe based on the genera Calophaca , Caragana and Halimodendron .…”

“…The genera Chesneya and Gueldenstaedtia formed a well-supported clade (Sanderson and Wojciechowski 1996), and were treated as the subtribe Chesneyinae (Ranjbar et al 2014). Within this subtribe, the generic delimitations were controversial, especially concerning the status of Chesniella Boriss.…”