Consortium of Lichen Herbaria - Polymeridium quinqueseptatum

Polymeridium quinqueseptatum (Nyl.) R.C. Harris
Family: Trypetheliaceae [Amphoroblastia quinqueseptata (Hepp) Servít, more]	North Carolina Biodiversity Project Resources North Carolina Biodiversity Project MB# 113048 TYPE. UNITED STATES. South Carolina. Ravenel, s.n., s.d. (H-NYL, holotype; BM, US, isotypes). Life form. Lichenized fungus. Description. Thallus crustose, ecorticate, endophloedal; surface smooth to uneven, whitish gray. Vegetative diaspores absent. Photobiont Trentepohlia alga. Ascomata perithecia, black, solitary, 0.3-0.4 mm diam., erumpent to prominent; ostiole apical. Hamathecium hyaline, inspersed; paraphyses sparse. Asci clavate, 8-spored; ascospores hyaline, fusiform, 18-28 x 5-7 μm, 5-7-septate, lumina rectangular or slightly rounded. Chemistry. Spot tests negative; no substances detected by TLC. Substrate and habitat. Corticolous on hardwood trees. Distribution. Pantropical north to coastal astern North America; in North Carolina found in the Coastal Plain ecoregion. Literature Aptroot, A. & R. Lücking (2016) A revisionary synopsis of the Trypetheliaceae (Ascomycota: Trypetheliales). The Lichenologist 48(6): 763-982. Nylander, W. (1858) Expositio synoptica Pyrenocarpeorum. 88 pp (original description as Verrucaria 5-septata).
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