Flavoplaca nigromarina (Vondrák, Ríha, Arup & Søchting) Arup, Søchting & Frödén

Flavoplaca nigromarina (Vondrák, Ríha, Arup & Søchting) Arup, Søchting & Frödén

Nordic J. Bot. 31, 1: 46 (2013).

Basionym: Data lacking.

Type: Georgia, Adjar,. Sarpi (Georgian-Turkish border), coastal cliffs N of village, 41°31´58.19"N, 41°32´58.35"E, on siliceous rock, 25 April 2007, J. Vondrák (CBFS JV6091-holotypus). ITS sequence of the holotypus: EU563436.
Barcode: Data lacking.
Coordinates: 41°31´58.19"N, 41°32´58.35"E.

Thallus: yellow-orange (in shaded sites yellow), of dispersed granules/ squamules, or thallus continuous, areolate. Areoles/ squamules (60-) 106 ± 25 (-170) µm thick (n = 39) and (0.18-) 0.44 ± 0.19 (-1.25) mm wide (n = 89). Areoles and squamules flat, smooth, with marginal soralia of confusa or flavocitrina type, soredia/ consoredia (16-) 31 ± 9 (-50) µm diam. (n = 89). Cortex present, (5-) 17 ± 8 (-37) µm thick (n = 90). Apothecia infrequent (40% of specimens fertile), (0.45-) 0.6 ± 0.1 (-0.8) mm diam. (n = 15). Disc in mature apothecia flat to slightly convex. Exciple (40-) 75 ± 33 (-150) µm thick (n = 15), zeorine; true exciple fills c. 1/2 of the exciple width. In young apothecia, thalline exciple may be hidden below the true exciple. Hymenium (50-) 70 ± 10 (-90) µm thick (n = 13). Paraphyses tips widened to (3.0-) 4.5 ± 1.0 (-6.5) µm (n = 29). Ascospores (9.0-) 11.5 ± 1.5 (-15.0) x (4.0-) 6.0 ± 1.0 (-8.5) µm (n = 17); length/ breadth ratio c. 1.9. Ascospore septa (3.5-) 5.0 ± 1.0 (-7.0) µm thick (n = 17), c. 0.43 of ascospore length. Conidia (2.0-) 3.2 ± 0.5 (-4.5) x (1.0-) 1.25 ± 0.25 (-1.5) µm (n = 29). (Vondrák et al. 2009: 598).