Haematomma hilare
Family
Haematommataceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Crustose
Current conservation status
2018 | Not Threatened | Qualifiers: SO
Brief description
Characterised by the thin, greenish white thallus; bright-orange to bright-vermilion, epruinose apothecial discs with persistent thalline margins concolorous with thallus; sinuous, 8–12-septate ascospores, (45–)50–60(–65) × 4–5 μm, with pointed apices. Characteristically developed on smooth, beech twigs and bark, often associating with Buellia cf. disciformis, Fuscidea sp., Haematomma nothofagi, Miltidea ceroplasta, Ochrolechia pallescens, Tephromela atra.
Distribution
South Island: Nelson (St Arnaud Range), Westland (Barrack Creek Flat), Canterbury (Arthur’s Pass, Glynn Wye, Cass, Craigieburn Range), to Southland (South Mavora Lake, Borland Lodge).
Known also from Parque Nacional Nahuel Huapí in southern Argentina.
Habitat
Mainly East of the Main Divide on smooth bark and twigs of native Nothofagaceae, especially Lophozonia menziesii and Fuscospora cliffortioides. Also on Lophomyrtus bullata and Pterophylla racemosa.
Detailed description
Thallus crustose, very thin, varnish-like, greyish-white to greenish, shining, margins delineated by a fine brownish-black line, to 2 cm diam., corticolous. Apothecia lecanorine, scattered, sessile or constricted at base, round, to 2 mm diam., disc orange-brownish and white-pruinose when young, plane or convex and matt, without pruina at maturity, margin concolorous with thallus, thin, entire or crenulate, occluded with age. Ascospores 11-13 septate, 60-64 × 3-4 µm.
Chemistry: Atranorin, usnic acid, methylplacodiolic acid and russulone.
Parasitised by the lichenicolous fungi *Cornutispora ciliata, *Leptorhaphis haematommatum, and *Opegrapha brevissima.
Substrate
Corticolous
Attribution
Fact sheet prepared by Marley Ford (14 January 2024). Brief description, Distribution, Habitat, and Features sections copied from Galloway (1985) & Galloway (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.