Portulaca rausii Danin

Raab-Straube, Eckhard von & Raus, Thomas, 2023, Euro + Med-Checklist Notulae, 16, Willdenowia 53 (1), pp. 57-77 : 67-68

Portulaca rausii Danin

(≡ Portulaca oleracea subsp. rausii (Danin) J. Walter ) – Fig. 9C, D .

+ Cm: Crimea: Simeiz, W slope of Koshka mountain, 15 Aug 1977, Kosykh & Usacheva (YALT); S coast of Crimea, top of the Red Stone cliff, 44°34'09''N, 34°17'08''E, 370 m, 4 Aug 1978, Kosykh & Usacheva (YALT); Gurzuf, 44°32'36''N, 34°15'59''E, 150 m, vineyard below bus stop “Priyatnoye svidaniye”, 27 Jul 2020, Ryff (YALT); Nikita village, 44°30'59''N, 34°14'14''E, 170 m, along street, 29 Jul 2020, Ryff (YALT).

– New area record for this taxon, identified by SEM study of the seeds. Its native range is the Mediterranean. The localities nearest to the Crimean populations are in continental S Ukraine, where it is noted as doubtfully naturalized ( Dzhus & al. 2015; POWO 2023b), and in the E Mediterranean, where it is native. In Crimea, Portulaca rausii was found primarily in natural and semi-natural habitats only on the S coast, in the submediterranean zone. This suggests that it is a native species there.

E. Bulakh, L. E. Ryff & M. Shevera

Figures

Fig. 9. Portulaca oleracea aggregate, ultrastructural study of seed surfaces by SEM. – A, B: P. papillatostellulata, Crimea, Bakhchisaray, railway station, 44°45'24.7''N 33°51'01.9''E, 145 m, on the tracks, 23 Aug 2020, Ryff (herb. Ryff). – C, D: P. rausii, Crimea, Gurzuf, 44°32'36''N, 34°15'59''E, 150 m, vineyard below bus stop “Priyatnoye svidaniye”, 27 Jul 2020, Ryff (YALT). – E, F: P. sardoa, Crimea, Yalta, bus station, 44°30'42''N, 34°10'14''E, 45 m, flowerbed, 22 Dec 2019, Ryff (YALT). – Scale bars: A, C, E = 100 μm; B, D, F = 50 μm. – Photographs by E. Bulakh & A. Terebilenko.