Astrothelium degenerans (Vain.) Aptroot & Lücking



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL25734], USA., Puerto Rico, Distr. Aquadilla, Bosque estadal de Guajacata on road 446, light forest on tree. 18°25’ N, 66°57 W, 200 m. Leg. A. & M. Aptroot (no 25734), 21.-31.03.1989, det. A. Aptroot 1989.
Thallus corticate, olive-green to yellowish or brown, smooth to uneven. Ascomata with apical ostioles, distinctly pseudostromatic; pseudostromata 1-2 mm diam., erumpent, forming irregilar groups including numerous ascomata, dark brown, internally with yellow-orange, dusty granular pigment. Hamathecium clear. Ascospores 8/ascus, 3- septate, hyaline, 15-25 x 6-9 μm, IKI-. Chemistry:thallus UV-, K-; pseudostromata UV-, externally K-, internally K+ red, with anthraquinone



Felix Schumm - CC BY-SA 4.0
[ABL40693], Brazil, Bahia, Chapada Diamantina, Lençois Cachoeira do Mosquito, 12°23' S, 41°22'40'' W, 450-500 m. On silicous rock along river. Leg. M Cáceres & A. Aptroot (no 40693), 22.07.2017, det. A. Aptroot, 2017.



Felix Schumm - CC BY-SA 4.0
[ABL40693], Brazil, Bahia, Chapada Diamantina, Lençois Cachoeira do Mosquito, 12°23' S, 41°22'40'' W, 450-500 m. On silicous rock along river. Leg. M Cáceres & A. Aptroot (no 40693), 22.07.2017, det. A. Aptroot, 2017.