Graphis subhiascens (Müll. Arg.) Lücking (2008: 111)

Kalb, Jutarat, Lücking, Robert & Kalb, Klaus, 2018, The lichen genera Allographa and Graphis (Ascomycota: Ostropales, Graphidaceae) in Thailand-eleven new species, forty-seven new records and a key to all one hundred and fifteen species so far recorded for the country, Phytotaxa 377 (1), pp. 448-450 : 448-450

* Graphis subhiascens (Müll. Arg.) Lücking (2008: 111) .

Syn.: Graphina subhiascens Müller Arg. (1894: 283) . Type:—AFRICA. Usambara, Holst 969 (G!, holotype).

Fig. 7H .

Thallus corticolous, white or whitish-gray, continuous, smooth, distinctly corticate, glossy. Lirellae erumpent, with a thick lateral to complete thalline margin, short to elongate, up to 5 mm long, straight, curved or sinuous, simple or irregularly branched, labia convergent, entire, disc concealed, not visible from above, ( subserpentina -morph). Exciple laterally carbonized; hymenium clear; ascospores 1/ascus, hyaline, densely muriform, 15–20 × 1–5-septate, 85–90 × 24–27 μm, 80–110 × 20–30 μm ( Lücking et al. 2008).

Chemistry: no lichen substances by TLC (anal. J. Sutjaritturakan).

Distribution and habitat:—Pantropical ( Lücking et al. 2009), reported from Costa Rica ( Lücking et al. 2008), Africa (type locality), Singapore ( Weerakoon et al. 2015), China ( Aptroot & Sparrius 2008 –present) and here from Thailand for the first time. It was growing on bark of an unidentified tree in a scondary forest at 130 m elevation.

Remarks:—Very similar is G. insulana , but this species differs in having an inspersed hymenium and norstictic acid as a major metabolite.

Material from Thailand examined:— Phuket province: Thalang district, in the area of Kho Rang , on bark of an unidentified tree in a secondary forest, 130 m, 07°53’37’’ N, 98°22’49’’ E, 22 April 2012, J. Sutjaritturakan 4054, (hb. K. & J. Kalb 42458) .

Figures

FIGURE 7. A. Graphis omiana (scale = 0.5 mm); B. Graphis persicina (scale = 0.5 mm); C. Graphis pinicola (scale = 0.5 mm); D. Graphis plumierae (scale = 0.5 mm); E. Graphis prunicola (scale = 0.8 mm); F. Graphis schroederi (scale = 1 mm); G. Graphis subducta (scale = 0.6 mm); H. Graphis subhiascens (scale = 1.2 mm).