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Cetraria aculeata
Nomenclature
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Family: ParmeliaceaeGenus: Cetraria
Species:
Cetraria aculeata
SUMMARY
Thallus forming shrubby tufts 2-4 cm high, of open, coarse, spinulose lobes, matt to glossy brown; main branches to 1 mm diam., ± flattened, uneven, furrowed, pitted, the minor branches more rounded and even. Pseudocyphellae concave, excavate and elongate, usually present in pits on the main branches. Soredia very rare, present only in damaged or parasitized material. Cortical tissue present beneath pycnidia.
Anamorph: conidiomata pycnidia, no other information available.
Teleomorph: ascomata apothecia, scarce; disc 2-5 mm diam. when mature. Interascal tissue of paraphyses 45-60 in length and 1-2 μm diam. Asci 45-55 × 10-13 μm. Ascospores 5.5-6.5 × 2.5-3.5 μm.
Chemistry: thallus C–, K–, Pd– (lichesterinic and protolichesterinic acids).