Collection location: Planalto das Cezaredas, Portugal [Click for map]
Here are some features of this specimen:
- Thallus crustose, thin, whitish with some rose tons;
- Perithecia partly immersed in the thallus, conical shape of vulcano, black with a whitish coating mainly at the place where it emerges from thallus;
- Hamathecium constituted by branched pseudoparaphyses, anastomosing above the asci;
- Asci very long, cylindrical, with a broad ocular chambre, with 8-spores;
- Spores hyaline, ellipsoid, 1-septate with a median euseptum, with the following average dimensions: Me = 14.07 × 6.21 ; Qe = 2.32 (N=21).
According to CNALH the genus Acrocordia is characterized by its cylindrical asci with an unusual ascal tip structure and ellipsoid, 1-septate ascospores with a warted epispore (that my equipment does not permit to observe). The description given there of Acrocordia conoidea fits very well on this specimen.
Acrocordia conoidea can be confused with Acrocordia salweyi, which as larger spores (20-35 × 10-15, according to lichens.ie). There is also another similar species, A. gemmata, which lives on trees.
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