Allographa verminosa (Müll. Arg.) Lücking & Kalb 2018

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

Allographa verminosa (Müll. Arg.) Lücking & Kalb , comb. nov.

Mycobank MB 827671

Basionym: Graphis verminosa Müller Arg., J. Linn. Soc., Bot. 29: 224 (1892).

Type:— INDIA. Manipur: G. Watt s.n. ( BM, holotype; G!, isotype) .

Thallus corticolous, beige-gray, whitish gray or gray, smooth or uneven, corticate, glossy. Lirellae prominent, with a thick lateral and a very thin apical thalline margin, elongate, up to 4 mm long, straight, curved or sinuous, irregularly branched, labia convergent, striate, gray-black, disc concealed, not visible from above ( acharii -morph). Exciple laterally carbonized; hymenium clear; ascospores 8/ascus, hyaline, transversely ca. 22–35-septate, 90–170 × 6–10 μm (D. D. Awasthi & K. P. Singh, on annotationslip attached to the holotype).

Chemistry: norstictic acid (Nakanishi on annotatin slip, attached to the isotype).

Distribution and habitat:—Southwestern Europe and eastern Palaeotropics, reported from Portugal ( Lepista & Aptroot 2016), India (type locality), Sri Lanka ( Aptroot & Sparrius 2008 –present) and for the first time from Thailand, Loei province, where it is growing commonly in lower montane scrubs ( Poengsungnoen et al. 2010). It was not present in our collections.

Remarks:—Very similar is Allographa trichospora (see above), but this species has slightly smaller ascospores (74–96 × 5–6 μm) and the exciple is only apically carbonized.