Opegrapha dekeselii Ertz

Jagadeesh Ram, T. A. M., 2014, New species and new records in Roccellaceae (Arthoniales) from the Andaman Islands, India, Phytotaxa 177 (3), pp. 155-162 : 161

Opegrapha dekeselii Ertz

This pantropical species has been found as common in the seashore forests of the Andaman Islands. It is characterized by the straight to curved, 0.5–1.5(–3) mm long, 0.1–0.15 mm wide ascomata; I+ blue quickly turning orange-red hymenium; I+ persistently blue subhymenium and 7-septate, 32–44 × 5–6 µm ascospores.

Specimens examined: — North Andaman : Kalipur Beach, elev. 10 m, 19 Apr. 2011, Jagadeesh Ram 129 ( PBL) . Middle Andaman : Rampur Beach, 12°52’19.8”N, 92°55’39.8”E, elev. 12 m, 7 Mar. 2012, Jagadeesh Ram 703, 718 ( PBL) ; Sound Island , 12°56’26.5”N, 92°54’03.1”E, elev. 5 m, 10 Mar. 2012, Jagadeesh Ram 930 ( PBL) ; Long Island seashore forest, 12°22’76.1”N, 92°55’32.2”E, elev. 18 m, 20 Feb. 2013, Jagadeesh Ram 2453 ( PBL) ; ibid., 12°22’42.3”N, 92°55’13.4”E, elev. 10 m, 20 Feb. 2013, Jagadeesh Ram 2475 ( PBL) . South Andaman : Collingpur Beach forest , elev. 10 m, 4 Jul. 2011, Jagadeesh Ram 489 ( PBL) ; Outram Island , 10 May 2012, Jagadeesh Ram 1896 ( PBL) . Little Andaman , South Bay, 5 May 2012, Jagadeesh Ram 1738, 1752 ( PBL) .