Dirinaria applanata
Common name
Dirinaria
Synonyms
Parmelia applanata
Family
Caliciaceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Foliose
Current conservation status
2018 | Not Threatened | Qualifiers: SO
Brief description
Characterised by the corticolous/lignicolous (rarely saxicolous) habit; the thickened, flabellate lobes that are confluent from the periphery to centre, and by the capitate soralia.
Distribution
Kermadec Islands: (Raoul Island). North Island: Northland (Moturoa Islands, Poor Knights Islands, Kawerua, Kaitaia, Hokianga, Whangarei, Little Barrier Island., Waiwera), Auckland (Auckland City, Rangitoto Island), South Auckland (Hunua Ranges, Coromandel Ranges, Hauraki Plains, Rotorua, Karapiro). Chatham Islands (Te Whanga Lagoon, de Lange 2019).
Widespread in tropical regions.
Habitat
On bark of Avicennia marina, Cupressus macrocarpa*, Dacrydium cupressinum, Dacrycarpus, Kunzea spp., Melicytus ramiflorus, Metrosideros excelsa, Phyllocladus, Pinus radiata*, Podocarpus totara, Prunus spp.*, Salix capraea* in ±open situations, at forest edge or in forest remnants of northern coastal forest, on a variety of introduced trees in farmland and in parks and gardens in northern urban areas, on maritime rocks, on fenceposts and railings.
Detailed description
Thallus suborbicular to spreading, 3-6 cm diam., closely appressed, corticolous. Lobes dichotomously to irregularly divided, 1-2 mm wide, contiguous, apices rounded, flabellate, scarcely distinctly discrete at periphery, usually confluent from margins, upper surface glaucous-white, or yellowish glaucous-grey to grey, moderately to densely pruinose, sorediate, longitudinally plicate-rugose centrally, becoming subverrucose, or subcrustose. Soralia laminal, on convex parts of plicate thallus, globose-capitate 0.5-1 mm diam., discrete, or dense and confluent, sorediafine, farinose, rarely granular, white. Lower surface black. Apothecia infrequent, laminal, sessile to subpedicellate, 0.6-2 mm diam., disc black, epruinose or subpruinose, margins, thick, entire concolorous with thallus. Ascospores biseriate, 12-22 × 6-10 µm.
Chemistry: Cortex K+ yellow; medulla K−, C−, KC−, Pd−; containing divaricatic acid (major), atranorin and chloroatranorin.
Substrate
Corticolous, lignicolous (fenceposts, railings), rarely saxicolous (maritime rocks)
Attribution
Fact sheet prepared by Melissa Hutchison (9 March 2022). Brief description, Distribution, Habitat, and Features sections copied from Galloway (1985, 2007).
References and further reading
Galloway D.J. 1985: Flora of New Zealand: Lichens. Wellington: PD Hasselberg, Government Printer. 662 pp.
Galloway D.J. 2007: Flora of New Zealand: Lichens, including lichen-forming and lichenicolous fungi. 2nd edition. Lincoln, Manaaki Whenua Press. 2261 pp.
de Lange 2019: Observation of Dirinaria applanata on iNaturalistNZ. https://inaturalist.nz/observations/20443807. Date accessed 2 August 2022.