Hypotrachyna swinscowii
Synonyms
Parmelinopsis swinscowii
Family
Parmeliaceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Foliose
Current conservation status
2018 | Data Deficient | Qualifiers: SO
Brief description
Characterised by the corticolous habit; the narrow, sublinear, subconvex lobes; the coarsely sorediate upper surface; the protruding black rhizines on the lower surface; and salazinic acid in the medulla.
Distribution
South Island: Nelson (Kerr Bay, Lake Rotoiti).
Palaeotropical. Known also from Central and South America and East Africa.
Habitat
Very poorly collected and understood in New Zealand.
Detailed description
Thallus loosely attached, pale to dark-grey. Lobes sublinear, subconvex, 1–2 mm wide, partly ascending. Upper cortex fragile, emaculate, sorediate. Soralia subapical, diffusely spreading. Soredia coarse, often brownish, mixed with corticate granules from eroding cortex. Medulla white. Lower surface black, moderately rhizinate. Rhizines fairly long, mainly simple but occasionally bifurcate or repeatedly branched, some growing out horizontally from margins. Apothecia not seen.
Chemistry: Cortex K+ yellow; medulla K+ yellow→red, C−, KC+ red, Pd + orange; containing atranorin and chloroatranorin, salazinic acid (major) and lobaric acid.
Substrate
Corticolous
Attribution
Fact sheet prepared by Marley Ford (5 August 2021). Brief description, Distribution, Habitat, Features and Similar taxa sections copied from Galloway (2007).
References and further reading
Galloway D.J. 2007: Flora of New Zealand: Lichens, including lichen-forming and lichenicolous fungi. 2nd edition. Lincoln, Manaaki Whenua Press. 2261 pp.