Portulaca oleracea

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

Portulaca oleracea L. s. str. – Fig. 8E, F

D Cm: Crimea: Dzhankoyskiy district, Taganash, 17 Aug 1886, Zelenetskiy (YALT); Sevastopol region, Balaclava, boulevard, 27 Jul 1897, collector unknown (YALT); S coast of Crimea, Artek, “New village”, 44°33'57''N, 34°19'03''E, 200 m, as weed on trail, 6 Sep 2021, Ryff (YALT); Yalta, bus station, 44°30'42''N, 34°10'14''E, 45 m, flowerbed, 28 Sep 2021, Ryff (YALT).

– Portulaca oleracea is the only species of the genus reported earlier for Crimea. In some sources, it is given as native ( Yena 2012), in others as alien ( POWO 2023b). It has been cited for Crimea as a plant widespread in ruderal places and agricultural lands since at least the end of the 18th century. In the Euro+Med PlantBase ( Uotila 2011 +), the P. oleracea aggregate in general is reported for the region, but neither P. oleracea s. str. nor other taxa of P. oleracea complex are given. The results of our SEM study of the seeds confirm that P. oleracea s. str. occurs in Crimea along with other taxa of this complex, which are listed here for the first time. Specimens of this morphotype have been collected over a long time in different parts of the peninsula, though occasionally, usually in anthropogenic habitats. Probably it is a native plant or an archaeophyte in Crimea.

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

Figures

Fig. 8. Portulaca oleracea aggregate, ultrastructural study of seed surfaces by SEM. – A, B: P. macrantha, Crimea, Simeiz, 28 Jul 1903, in collibus, Golde (YALT). – C, D: P. nitida, Crimea, Sevastopol, surroundings,Yalta Ring, 44°32'26''N, 33°35'49''E, 100 m, side of road, 19 Jul 2020, Ryff (YALT). – E, F: P. oleracea s. str., Crimea, S coast of Crimea, Artek, “New village”, 44°33'57''N, 34°19'03''E, 200 m, as weed on trail, 6 Sep 2021, Ryff (YALT). – Scale bars:A, C, E = 100 μm; B, D, F = 50 μm. – Photographs by E. Bulakh & A. Terebilenko.