Rudolgaea fascinifera (Potemkin) Potemkin & Vilnet, 2021

Potemkin, A. D. & Vilnet, A. A., 2021, Reappraisal of Gymnocolea and description of a new genus Rudolgaea (Anastrophyllaceae, Marchantiophyta), Arctoa 30 (2), pp. 138-148 : 144

Rudolgaea fascinifera (Potemkin) Potemkin & Vilnet , comb. nov. Figs. 3–5

Basionym: Gymnocolea fascinifera Potemkin, 1993 , Arctoa 2: 76.

Description: Potemkin, 1993.

Illustrations: Potemkin, 1993: Figs 5 , 6 ; this article: Figs. 3–5 .

Distribution. Indefinite yet, probably undercollected and overlooked; recorded from the Yamal Peninsula, West Siberian Arctic and the Seward Peninsula, Alaska (Potemkin, 1993), Komi Republic (Potemkin, 2008), Chelyabinsk Region (Ivchenko & Potemkin, 2015), and probably from subarctic Yakutia (Sofronova et al., 2015).

Figures

Fig.3. Rudolgaea fascinifera (Potemkin 92-9701, LE, holotype). A, B: habit of plants. Scales:1 mm.

Fig. 4. Rudolgaea fascinifera (Potemkin 92- 9701, LE, holotype). A–D: leaves; E: dorsal cortical cells; F: basal leaf cells with striolate papillose surface; G: ventral leaf base with rhizoids. Scales: A, B: 160 µm, C, D: 125 µm, E, F: 25 µm, G: 100 µm.

Fig. 5. Rydolgaea fascinifera (Potemkin 92- 9701, LE, holotype).A–C: cells of leaf lobe apex, leaf middle and base, respec- tively; D–F: stem trans- verse sections; G: ventral cortical cells of stem. Scales: A–C: 25 µm, D–F: 80 µm, G: 18 µm.

Fig. 6. Rudolgaea borealis (Troeva G1-138, LE). A, B: shoot sectors; C: lobe; D, F: stem transverse sections; E: basal leaf cells. Scale bars: for A, B: 750 µm; C: 18 µm; D, E: 30 µm; F: 19 µm. From Potemkin et al. (2021).