Relicina amphithrix Hale

Relicina amphithrix

Thallus appressus, corticola, viridi-flavicans, 2–6 cm diametro, lobis sublinearibus, angustis, 0.3–1.0 mm latis, margine lobulascentibus, lobulis raro palmato-dactyloideis, bulbo-ciliatis, bulbis inflatis, congestis, aetate apice ramosis, superne dense isidiatis, isidiis cylindricis, cylindricis vel sparse ramosis, pro parte isidiato-lobulascentibus; cortex superior 8–10 μm crassus, stratum gonidiale 10 μm crassum, medulla 30–40 μm crassa, cortex inferior 9–10 μm crassus (Figure 1f); subtus niger, dense rhizinosus, rhizinis nigris, nitidis, simplicibus vel sparse ramosis. Apothecia rara, adnata, usque ad 1 mm diametro, amphithecio coronato, basin retrorso-rhizinato, disco imperforator, hymenio 30–40 μm alto, sporis octonis, 3 × 4 μm.

CHEMISTRY.—Medulla K−, C+, KC+ reddish, P+ red or medulla not reacting with color tests, usnic and echinocarpic acids and associated unknown substances or only usnic acid present.

HOLOTYPE.—Oak forest, elevation about 1600 m, Cameron Highlands, Pahang, Malaya, M. E. Hale 30203, 2 March 1965 (US).