Ionaspis lacustris
Common names
Rusty brook lichen
Biostatus
Native
Current conservation status
2018 | Data Deficient | Qualifiers: SO
Category
Lichen
Structural class
Lichens - Crustose
Lichen substrate
Saxicolous (rock)
Substrate details
Saxicolous
Detailed taxonomy
Genus
Family
Taxonomic notes
The genus Ionaspis is included in the family Hymeneliaceae (Eriksson et al. 2004; Pennycook & Galloway 2004; Eriksson 2005) and comprises some 10 taxa of freshwater, aquatic lichens found mainly in temperate, boreal–hemiboreal and/or arctic-alpine environments of the Northern Hemisphere. Species occur submerged in small creeks or streams or on riverbank boulders and stones, in the spray zone of waterfalls, on the rocky shores of lakes, or on small boulders of siliceous rocks in forest.
The genus and its separation from the related genera of Hymenelia, Eiglera and Aspicilia is discussed by Lutzoni & Brodo (1995), who recognised three distinct species groupings within Ionaspis. These are: the Ionaspis suaveolens group, the I. odora group and the I. lacustris group. One species, I. lacustris, is known from New Zealand. This species is frequently infected by lichenicolous fungi, and colonies are often infected by more than one species.
Endemic taxon
No
Endemic genus
No
Endemic family
No
Other information
Etymology
lacustris: From the Latin lacus ‘lake’, meaning growing beside a lake
Referencing and citations
References and further reading
Eriksson O.E. (Ed.) 2005: Outline of Ascomycota – 2005: Myconet 11: 1-113.
Eriksson O.E., Baral H.-O., Currah R.S., Hansen K., Kurtzman C.P., Rambold G. & Laessøe T. 2004: Outline of Ascomycota – 2004. Myconet 10: 1-99.
Galloway D.J. 2007: Flora of New Zealand: Lichens, including lichen-forming and lichenicolous fungi. 2nd edition. Lincoln, Manaaki Whenua Press. 2261 pp.
Lutzoni F.M. & Brodo I.M. 1995: A generic redelimitation of the Ionaspis-Hymenelia complex (lichenized Ascomycotina). Systematic Botany 20: 224-258.
Pennycook S.R. & Galloway D.J. 2004: Checklist of New Zealand “Fungi”. In: McKenzie, E.H.C. (Ed.) Introduction to fungi of New Zealand. Fungi of New Zealand/Ngā Harore o Aoteroa Volume 1. Fungal Diversity Research Series 14: 401-488.