Cryptothecia duplofluorescens Aptroot & M.F. Souza, 2021

Aptroot, André & Souza, Maria Fernanda, 2021, New crustose lichens from a tropical coastal area in Paraná (Brazil), Cryptogamie, Mycologie 20 (12), pp. 191-197 : 192

publication ID	https://doi.org/ 10.5252/cryptogamie-mycologie2021v42a12
DOI	https://doi.org/10.5281/zenodo.7815211
persistent identifier	https://treatment.plazi.org/id/03B8746C-FFED-FF9A-F19F-FE88FA71FB6C
treatment provided by	Felipe
scientific name	Cryptothecia duplofluorescens Aptroot & M.F. Souza
status	sp. nov.

Treatment

Cryptothecia duplofluorescens Aptroot & M.F. Souza View in CoL , sp. nov.

( Fig. 1 View FIG A-C)

Corticolous sterile Cryptothecia with thallus pale ochraceous, dull, thin, containing lichexanthone, soralia delimited, containing 2’-O-methylmicrophyllinic acid, soredia globose to short ellipsoid, c. 25-40 µm diam, often with thin protruding hyphae.

MYCOBANK. — MB839446.

TYPE. — Brazil, Paraná, Guaraqueçaba, Tagaçaba Porto da Linha , road PR– 405 km 36.2, at right side of road, in chácara (property of Donald Schause), 14.X.2020, alt. 15 m, on palm tree bark, A. Aptroot & M.F. Souza 82161 (holo-, CGMS; iso-, ABL).

ADDITIONAL MATERIAL STUDIED. — Same details, A. Aptroot & M.F. Souza 82090 ( CGMS).

DESCRIPTION

Thallus corticolous, pale ochraceous, dull, thin, IKI negative, covering an area of up to 4 cm diam., surrounded by a c. 0.2 mm wide brown hyphal prothallus line. Algae trentepohlioid, orange, c. 10-17 µm diam. Soralia delimited, patchy, covering about half of the thallus surface. Soredia globose to short ellipsoid, IKI negative, filled with small crystals, c. 25-40 µm diam, often with thin protruding hyphae. Ascomata and pycnidia not observed.

CHEMISTRY. — Thallus C-, K-, P-, UV+ yellow, with lichexanthone; soralia UV+ white, with 2’- O -methylmicrophyllinic acid. The substance 2’-O-methylmicrophyllinic acid and lichexanthone were demonstrated by tlc.