Astrothelium dimidioinspersum M. Cáceres & Aptroot



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.



Felix Schumm - CC BY SA 4.0
[ISE28410], Brazil, Amazonas, Manaus. Reserva Florestal Adolpho Ducke, along trails in vicinity of field station, 80 m, 59°57’ W, 2°56’ S, on tree bark in primary rain forest. Leg. M. Cáceres & A. Aptroot (no ISE284107), 3–8.06.2016, det. A. Aptroot, 2016. ISOTYPE
Thallus dull, pale greenish, not surrounded by a prothallus. Ascomata globose to pyriform, 0.4–0.6 mm diam., immersed in and below the thallus, in groups of 3–8. Pseudostroma inconspicuous, flush with the thallus, roundish, c. 1–3 mm diam., dirty greyish to creamish on the surface, internally not pigmented. Ostioles eccentric, fused, black. Hamathecium finely inspersed in the upper half. Ascospores (1– )2/ascus, hyaline, regularly muriform, 155–170 × 30–40 μm, longellipsoid, distinctly thickened at the median septum, not surrounded by a gelatinous sheath. Mature pycnidia not observed; the numerous tiny black dots on the pseudostromata could be immature pycnidia. Chemistry. Thallus and pseudostroma UV–, C–, K–, KC–, P–. No lichen substances detected with TLC.