Phylogenetic position and taxonomic assignment of Thlaspi aghricum P.H.Davis & K.Tan (Brassicaceae)

Abstract

A general review of the taxonomic status of Thlaspi past and present is given, and a critical evaluations of its segregates based on both morphological and molecular data are presented. ITS molecular phylogenetic study of Thlaspi aghricum and related species, as well as seed-coat morphology and anatomy strongly support the placement of the species in Noccaea. The new combination N. aghrica is proposed, and detailed description and distribution of the species are given.

Phylogeny and systematics of the tribe Thlaspideae (Brassicaceae) and the recognition of two new genera

“…However, such infrageneric classification for a small genus does not seem to be rational. As shown by Koch & Mummenhoff (2001) and Firat & al. (2014), the genus is polyphyletic, and our comprehensive phylogenetic study confirmed this.…”

“…These DNAbased studies clearly demonstrated that Thlaspi s.str. belongs to Thlaspideae, whereas the remaining segregates belong to Coluteocarpeae Al-Shehbaz, 2012, 2014Firat & al., 2014). Meyer (1973Meyer ( , 2001 assigned the six species of Thlaspi s.str.…”

Noccaea ali-atahanii (Brassicaceae): a new species from southern Anatolia

“…Taxon names follow the concept presented in Brassibase (https://brassibase.cos.uni-heidelberg.de/) (https://brassibase.cos.uni-heidelberg.de/access date: 01.12.2017). ., 1997b;Koch and Mummenhoff, 2001;Koch and Al-Shehbaz, 2004;Fırat et al, 2014;Ali et al, 2016)…”

“…N. ali-atahanii and N. aghrica seem to be sister species (with 0.99 posterior probability support) in the Bayesianbased phylogenetical analysis of the ITS region ( Figure 6). N. aghrica was initially described as Thlaspi aghricum by Davis et al (1988) and recently transferred to Noccaea with the presentation of a second accession by Fırat et al (2014). Özgişi et al (2018b) reported a third accession from the province of Kahramanmaraş (southwestern Turkey).…”

An attempt to solve the taxonomic confusion of Thlaspiceras F.K.Mey. complex(Noccaea Moench-Brassicaceae) with ISSRs

“…Many taxonomical studies have taken place on the generic delimitation of Noccaea, since debates regarding the systematics of the genus have made it very attractive for researchers (Al-Shehbaz et al, 2006;Al-Shehbaz, 2012;Al-Shehbaz, 2014;Clapham, 1964;Engler and Prantl, 1891;Fırat et al, 2014;Koch and Mummenhoff, 2001;Hedge, 1965;Mummenhoff and Zunk, 1991;Mummenhoff and Koch, 1994;Mummenhoff et al, 1997;Schulz, 1936;Zunk et al, 1996). Among these studies, researchers who used morphology to delimitate the generic (as well as species) circumscription of Noccaea members mainly used floral features (i.e.…”