11. Taraxacum sandomiriense Wolanin, Phytotaxa 375(2): 159. 2018.

Type.

Poland, KamienLukawski, path on the edge of the loess slope (near the reserve), 50°41'N, 21°47'E, 6 May 2013, M. Wolanin (holotype KRA 476861; isotype KRA 476862) .

Description.

Plants small to middle-sized, 6-10(-12) cm tall. Leaves greyish-green, dull, hairy on the upper side, approximately (3-)5-10(-15) cm long and 1-2.5 cm wide, usually 3-5 times longer than wide, blades narrowly oblanceolate, usually broadest in upper 1/3, with 6(-7) pairs of lateral lobes; lateral lobes opposite to remote; lateral lobes of the inner leaves narrowly triangular, patent, with an entire or slightly dentate, somewhat convex distal margin, proximal margin usually entire or with a few small teeth; lateral lobes of the outer leaves triangular, entire or with a few teeth at the distal margin; interlobes often toothed; terminal lobe of the inner leaves tripartite, mostly lingulate and entire on the margins; terminal lobe of the outer leaves triangular; petioles unwinged, pale purple, hairy. Scapes as long as or longer than leaves, hairy, especially just under the capitulum. Capitulum convex, 2.5-3.0 cm in diameter, yellow, outer strips grey-violet; inner bracts greyish-green, corniculate; outer bracts usually 10-14, lanceolate, usually 5-7 mm long, 2-2.5 mm broad, purplish green, with a distinct white hyaline margin (0.1-0.2 mm broad), recurved and strongly corniculate; stigmas greyish-yellow, pollen present. Achenes brown, with thin spinules in the upper part, 3.4-4.0 mm long (incl. the 0.8-1.2 mm long, narrowly conical pyramid) and (0.7-)0.8(-0.9) mm broad, rostrum 8.5-10 mm long, pappus white.

Flowering period.

April (May).

Habitat.

Rocky and loess slopes of river valleys with south-western exposure, in plant phytocenoses dominated by species characteristic to the Festuco - Brometea classes, usually in eroded or trampled areas. In Kamienna river valley (Sandomierz Upland, Gałkowice-Ocin place) this species was noted on the path and accompanied by Achillea millefolium, Alyssum alyssoides, Bromus inermis, Campanula sibirica, Centaurea scabiosa, Clinopodium vulgare, Cornus sanguinea, Dactylis glomerata, Dianthus carthusianorum, Euphorbia cyparissias, Falcaria vulgaris, Festuca rupicola, F. trachyphylla, Fragaria vesca, Galium verum, Hypericum maculatum, Inula hirta, Juniperus communis, Koeleria macrantha, Leucanthemum vulgare, Linaria vulgaris, Medicago falcata, Peucedanum oreoselinum, Phleum phleoides, Plantago media, Poa pratensis, Polygala comosa, Potentilla arenaria, Prunus spinosa, Pyrus pyraster, Rosa canina, R. dumalis, R. rubiginosa, Salvia pratensis, Scabiosa ochroleuca, Stachys recta, Thymus marschallianus, Ulmus minor .

Somatic chromosome number.

24 (Wolanin et al. 2018).

General distribution.

Poland.

Distribution in Poland.

Species very rare, found only around Sandomierz (Wolanin et al. 2018; Fig. 23E).

Specimens examined.

FE60 - Podgrodzie near Ćmielów, xerothermic grassland on rock outcrop, 50°54'24"N, 21°32'44"E, 17 April 2012, M. Wolanin, M. Nykiel (003431 UR); Podgrodzie, xerothermic grassland on rock outcrop, 50°54'24"N, 21°32'44"E, 13 April 2017, M. Wolanin, M. N. Wolanin (003421, 003422 UR); FE82 - Gałkowice-Ocin, xerothermic grassland on SW slope, 50°44'43"N, 21°43'52"E, 17 April 2012, M. Wolanin, M. Nykiel (003442 UR); FE92 - Kamień Łukawski, path on edge of loess slope near reserve, 50°41'04"N, 21°47'09"E, 6 May 2013, M. Wolanin (476861, 476862 KRA); Sandomierz (Strzelecka Hill), loess slope, 10 May 1924, A. Kozłowska (76947 KRA).

Notes.

A distinct species with noticeably hairy leaves, purplish-green outer bracts with distinct white hyaline margin, recurved and strongly corniculate. Achenes are brown, with slender spinules in the upper part (Figs 32, 33).