Roemeria Medik.

Elvebakk, Arve & Bjerke, Jarle W., 2024, Papaver recircumscribed: A review of neighbouring Papaveraceae genera, including Afropapaver nom. et stat. nov. and Oreomecon, a large, Arctic-Alpine genus, PhytoKeys 248, pp. 105-188 : 105-188

2. Roemeria Medik. , Ann. Bot. (Usteri) 1 (3): 15. 1792

Type species.

Roemeria violacea Medik. , nom. illeg. [≡ R. hybrida (L.) DC.]

Notes.

The genus is summarised here as including 16 species and one subspecies according to the treatment by Hassler (2023 b). As shown by Fig. 2 , the genus has a similar distribution to Papaver , but is absent from most parts of the Macaronesian Islands. It is present in Great Britain and southernmost Scandinavia, while it is absent from large parts of Central European Russia, the Arabian Peninsula and the Himalayan foothills. Roemeria may have had a long presence in Central Asia prior to the uplift of the Qinghai-Tibetan Plateau, based on its phylogenetic history illustrated in Fig. 1 . Today, it extends as far east as Mongolia, represented by the species R. refracta DC. ( Baasanmunkh et al. 2022) .

Figures

Figure 1. A summary version of the phylogram with chronology from Kadereit et al. (2011) with the names of the clades adopted in the present study.

Figure 2. World distribution of the genera Cathcartia (grey), Meconopsis (sky blue), Oreomecon (yellow) and Roemeria (red). The total distribution of Oreomecon is divided into eight geographical areas (A – H) both on the map and in the textual treatment. Area E consists of two almost equally large subareas, while area H consists of one main subarea and four much smaller subareas (see arrows). Note also that the total distribution of Cathcartia consists of four different subareas. See Table 1 for the numbers of species and subspecies per genus and for each of the subareas of Oreomecon.