Fissurina dumastii
Synonyms
Graphis dumastii, Graphis glauca, Fissurina glauca
Family
Graphidaceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Crustose
Current conservation status
Not Evaluated
Distribution
North Island: Auckland (Manurewa).
Pantropical. Previously recorded from Australia, Indonesia, India, Thailand, Vietnam, the Solomon Islands, Brazil, Bolivia, Colombia, and the southeastern United States of America, among other countries (Marshall et al. 2022).
Habitat
So far only recorded on growing on the bark of kahikatea (Dacrycarpus dacrydioides) (Marshall et al. 2022).
Detailed description
Copied from Marshall et al. (2022): “Thallus green, thin, smooth, glossy. Ascomata inconspicuous, rare to abundant, immersed, indicated by a thin line between the two thin lips, sometimes slightly open, somewhat raised and paler than the thallus, straight, curved or sinuous, often branched, 1–3 mm long, 0.05–0.15 mm wide. Proper exciple absent. Hymenium 100–125 μm thick. Ascospores overlapping-uniseriate, ellipsoid to clavate, 4-locular, 16–20 × 8–10 μm, I–.”
Chemistry: Thallus K–, C–, KC–, PD–, UV–, TLC, no lichen products detected.
Similar taxa
Marshall et al. (2022) stated: “Within the New Zealand lichenised mycobiota, Fissurina dumastii resembles F. insidiosa C.Knight & Mitt. in having no demonstrable chemistry and pale lirellae. However, Fissurina dumastii lacks the black prothallus of F. insidiosa, has less conspicuous and shorter lirellae (thickened in F. insidiosa) that are more often branched, and a mainly continuous thallus (less fissured and lacking the shallow verrucae characteristic of F. insidiosa). Within the material examined the abundance and density of lirellae varied and the small, inconspicuous nature of the lirellae, combined with low light, made it difficult to distinguish this species in the field from other lichens, notably Porina exocha (Nyl.) P.M.McCarthy on the same tree without a 10× hand lens.”
Substrate
Corticolous
Attribution
Fact sheet prepared by Melissa Hutchison (26 August 2022). Information in the Distribution, Habitat, Features, and Similar taxa sections copied from Marshall et al. (2022).
References and further reading
Marshall A.J., Blanchon D.J., Aptroot A., Lücking R., de Lange P.J. 2022: Five new additions to the lichenized mycobiota of the Aotearoa / New Zealand archipelago. Ukrainian Botanical Journal 79(3): 130-141.