Thelenella lateralis Aptroot & M. Cáceres, 2015

Aptroot, André, Andrade, Dannyelly Santos, Mendonça, Cléverton, Lima, Edvaneide Leandro De & Cáceres, Marcela Eugenia Da Silva, 2015, Ten new species of corticolous pyrenocarpous lichens from NE Brazil, Phytotaxa 197 (3), pp. 197-206 : 205-206

publication ID	https://doi.org/ 10.11646/phytotaxa.197.3.3
persistent identifier	https://treatment.plazi.org/id/7C0187D8-FFA1-5B6D-539D-07F223E4837C
treatment provided by	Felipe
scientific name	Thelenella lateralis Aptroot & M. Cáceres
status	sp. nov.

Treatment

Thelenella lateralis Aptroot & M. Cáceres , sp. nov. ( Fig. 5E–F View FIGURE 5 )

Mycobank #811025

Corticolous Thelenella with eccentric ostiole, ascospores irregularly muriform, 7–9 × 0–2 -septate, 27–32 × 9–10.5 μm.

Holotype: — BRAZIL. Sergipe: Aracaju, Parque da Cidade Governador José Rollemberg Leite ; 10˚52’57”S, 37˚03’10”W; alt. c. 75 m; on bark of tree; 15 September 2013, M.E.S. Cáceres & A. Aptroot 18215 ( ISE; isotype: ABL).

Thallus thin, corticate, metallic grey, without pseudocyphellae, without prothallus. Ascomata immersed in the bark, pyriform, 0.4–0.55 mm diam., single. Wall only carbonized above. Ostiole eccentric, dark grey. Hamathecium not inspersed with oil droplets, filaments anastomosing. Ascus with ocular chamber. Ascospores 8/ascus, long ellipsoid-fusiform, hyaline, irregularly biseriate, irregularly muriform, 7–9 × 0–2 -septate, 27–32 × 9–10.5 μm, ends rounded or lower end pointed. Pycnidia not observed. Chemistry: No substances detected.

Ecology and distribution: —On smooth bark in a remnant of Atlantic rain forest. Only known from Brazil.

Discussion: —This is the first species in the genus described with eccentric ostioles. It seems closest to Thelenella paraguayensis Malme (1928: 5) , which however has also larger ascospores (42–60 × 13–19 μm).

Additional specimen examined: — BRAZIL. Sergipe: Aracaju, Parque da Cidade Governador José Rollemberg Leite ; 10˚52’57”S, 37˚03’10”W; alt. c. 75 m; on bark of tree; 15 September 2013, M.E.S. Cáceres & A. Aptroot 18217 ( ISE; ABL, topotypes) .