The distinction between Sagina apetala and S. micropetala (Caryophyllaceae: Sagineae), their phylogenetic relationships, and a note on the coastal origin of some widespread ruderals

Abstract

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Typification of Sagina ciliata and S. stricta (Caryophyllaceae), two taxa described from Sweden, and notes on the taxonomy of the S. apetala complex

“…Thulin (2021) made a similar comment and pointed particularly to S. vasconica Sennen (1936: 145), with type from northern Spain, as a plant that much resembles S. micropetala. In any case, the type of S. ciliata designated here is in agreement with S. apetala in the sense of Dillenberger & Kadereit (2022).…”

“…The description (in Swedish) is very brief, but the ciliate leaf margins are pointed to. The name has been used in various ways through history and was recently cited as a heterotypic synonym of S. apetala Arduino (1764: 22) by Dillenberger & Kadereit (2022). However, no type was designated.…”

“…The lectotypification takes precedence over the typification proposed by Dillenberger & Kadereit (2022). The lectotype and isolectotype designated by them (C.A.…”

“…2102) the rank of species as S. micropetala, providing differences from S. ciliata (but not from S. apetala). Karlsson (2001) used the names S. micropetala and S. apetala (with S. ciliata in synonymy of the latter name) for two taxa in the Nordic countries; Dillenberger & Kadereit (2022) did the same, mainly for Germany, emphasizing that further studies are needed in other areas. According to Karlsson (2001), "in the C and E Mediterranean, and in SW Asia, S. micropetala and S. apetala are largely replaced by variants showing a combination of characters from both".…”

“…The description (in Swedish) is very brief, but the ciliate leaf margins are pointed to. The name has been used in various ways through history and was recently cited as a heterotypic synonym of S. apetala Arduino (1764: 22) by Dillenberger & Kadereit (2022). However, no type was designated.Sagina stricta Fries (1817: 47) was also described from southern Sweden based on material collected by Fries "in littore maris petroso ad Cimbritshamn" [Simrishamn].…”