Catillaria glaucogrisea
Family
Catillariaceae
Flora category
Lichen – Native
Endemic taxon
Yes
Structural class
Lichens - Crustose
Current conservation status
2018 | At Risk – Naturally Uncommon | Qualifiers: DP, IE, OL
Brief description
Characterised by the saxicolous (basicolous rocks) habit; the pale-grey, areolate thallus; immersed to sessile, black, lecideine apothecia; a colourless hypothecium; a colourless hymenium, 65–70 μm tall; paraphyses with swollen, blue-black-pigmented apical caps; Catillaria-type asci; and hyaline, 1(–2)-septate ascospores, 10–12 × 4–6 μm.
Distribution
Campbell Island. Chatham Islands.
Habitat
Previously only known from the type locality. On hard limestone rocks.
Detailed description
Thallus crustose, effuse, areolate, pale lead-grey, 0.15 mm thick, without a marginal prothallus. Areolae irregular, flat to subconcave, 0.5–0.7 mm diam., separated by deep cracks. Medulla I−. Apothecia common, rounded, lecideine, 1–(2–3) per areole, immersed at first, disc concave, becoming sessile with flat, roughened disc, (0.2–)0.25–0.3(–0.4) mm diam., margins scarely raised to 0.02 mm wide. Epithecium blue-black, 5–10 μm thick (K−,N+ red). Hymenium hyaline, I+ blue, 65–70 μm tall. Paraphyses simple or sparingly branched, 1.5–3 μm wide, apices swollen to 5 μm diam., blue-black (K−. N+ red). Hypothecium colourless, 20–30 μm thick. Asci cylindrical, 465–50 × 15–17 μm. Ascospores hyaline, 1(–2)-septate, 10–12 × 4–6 μm.
Substrate
Saxicolous
Attribution
Fact sheet prepared by Marley Ford (21 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.