Pertusaria hypoxantha
Family
Pertusariaceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Crustose
Current conservation status
2018 | Data Deficient | Qualifiers: SO
Brief description
Characterised by the saxicolous (coastal rocks) habit; the yellow thallus without isidia or soredia; 8-spored asci; and the presence of thiophaninic and stictic acids.
Distribution
North Island: Northland (Hen Island, Little Barrier Island).
Also in East Australia (Queensland, New South Wales) and Brazil.
Habitat
On coastal rocks.
Detailed description
Thallus dull- to bright-yellow, areolate, surface smooth and dull, without isidia or soredia. Apothecia verruciform, uncommon, scattered, rarely confluent, concolorous with thallus, slightly flattened-hemispherical, becoming constricted at base, 0.6–1 mm diam.; ostioles inconspicuous, pale to dark yellow-brown, 1 per verruca. Ascospores 8 per ascus, irregularly uniseriate, ellipsoidal, rarely subfusiform, smooth, 55–75(–90) × 25–35 μm.
Chemistry: K−, KC+ orange, C+ orange, Pd− or + weak-yellow; containing thinophaninic acid (major), 2-chloro-6-O-methylnorlichexanthone (tr.), stictic acid (major), constictic acid (minor), and ±lichexanthone (minor-tr.)
Similar taxa
It is distinguished from P. xanthoplaca by the absence of soredia.
Substrate
Corticolous
Attribution
Fact sheet prepared by Marley Ford (7 January 2024). Brief description, Distribution, Habitat, and Features 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.