Allographa elongata (Zenker) 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 elongata (Zenker) Lücking & Kalb , comb. nov.

Mycobank MB 827651

Basionym: Graphis elongata Zenker , in: Goebel & Kunze, Pharmaceutische Warenkunde (Eisenach) 1: 165 (1827). Type:— BRAZIL. Auf der Rinde von Guanuco grisea ( Cinchona cordifolia ) (not seen; Hale Card Index).

Fig. 2D .

Thallus corticolous, whitish to whitish gray, continuous, smooth, dull. Lirellae prominent to sessile with a thick lateral thalline margin, very short and unbranched, labia convergent, entire, black, not pruinose, disc concealed ( deserpens - morph). Exciple laterally carbonized; hymenium clear; ascospores 8/ascus, hyaline, becoming brownish with age, transversely 7–13-septate, 40–75 × 9–11 μm, 13–17-septate, 70–80 × 11–15 μm (lectotype, Lücking et al. 2009).

Chemistry: no lichen substances by TLC (anal. K. Kalb).

Distribution and habitat:—Pantropical ( Lücking et al. 2009), reported from Brazil (type locality), Australia (Archer 2001) and here for the first time from Thailand where it is growing on bark of a deciduous tree at the edge of a tropical rainforest.

Remarks:—The ascospores in our collection are slightly smaller than those of the lectotype, but fit exactly the dimensions described for Graphis stenospora var. deficiens A. W.Archer which is considered a synonym of Allographa elongata ( Lücking et al. 2009) .

Material from Thailand examined:— Phang-Nga province : Takua Pa district , tambon Khuek Khak , ca. 3 km E of Phetkasem Road (Road #4), area of Sai Rung Waterfall, 50 m, 8°44’28’’ N, 98°16’45’’ E, 9 June 2015, J. Sutjaritturakan 5039 & K. Kalb (hb. K. & J. Kalb 41499) .

Figures

FIGURE 2. A. Allographa aquilonia (scale = 1 mm); B. Allographa atrocelatoides (scale = 1 mm); C. Allographa daintreensis (scale = 0.5 mm); D. Allographa elongata (scale = 0.5 mm); E. Allographa kansriana; inlet showing end of a terminally muriform ascospore with a gelatinuous cap (scale = 0.3 mm; scale inlet = 3 μm); F. Allographa macella (scale = 0.5 mm); G. Allographa schummii (scale = 0.5 mm); H. Allographa sitianoides (scale = 0.4 mm).