Caloplaca
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Caloplaca spec. |
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The genus Caloplaca includes around 500 species of lichen planus worldwide . There are around 100 species in Central Europe , including around 75 in Germany.
Many species are still insufficiently known due to a lack of clear characteristics and cannot yet be reliably identified.
The species colonize silicate rock, limestone (partly also endolithic ) and base-rich bark. But mosses and plant remains are also colonized. They are widespread up to the high mountains.
The structure of the spores is characteristic. These are polar-2-cell (apart from Caloplaca ochracea up to 4-cell) and rhombic, ellipsoidal to elongated.
Most of the species that occur on rock tolerate drought very well.
In the course of an extensive phylogenetic investigation of the Teloschistaceae family, including markers from the rRNA , the extensive and heterogeneous genus Caloplaca was split up in 2013 , after which numerous species of Caloplaca are now added to new genera ( e.g. Variospora ), e.g. B. Variospora flavescens .
Types (selection)
- Caloplaca ammiospila (Wahlenb.) Oliv.
- Caloplaca aurantia (Pers.) Lightb.
- Caloplaca cerina (Hedw.) Th. Fr.
- Caloplaca cerina var. Muscorum (A. Massal.) Jatta
- Caloplaca chlorina (Flot.) H. Olivier
- Caloplaca erythrocarpa (Pers.) Zwackh.
- Caloplaca flavorubescens (Hudson) Laundon
- Caloplaca holocarpa (Hoffm. Ex Ach.) Calf
- Caloplaca lactea (A. Massal.) Zahlbr.
- Caloplaca obamae K. Knudsen
- Caloplaca ochracea (Schaer.) Flagey
Namesake
- The genus is named after the Caloplaca Cove , a bay on the island of Signy Island in the archipelago of the South Orkney Islands , and for the Caloplaca Hills , a group of hills in the West Antarctic Marie Byrd Land . Both names were given due to the spread of corresponding lichens in these places.
literature
- Volkmar Wirth: The lichens of Baden-Württemberg . Verlag Eugen Ulmer, Stuttgart 1995, ISBN 3-8001-3325-3
- Aino Henssen , Hans Martin Jahns : Lichenes: An introduction to lichens. Thieme, Stuttgart 1974, ISBN 3-13-496601-8 .
- Meddeleser om Greenland Bioscience 25 (1978): The lichen genus Caloplaca in Greenland, Eric Steen Hansen, Josef Poelt and Ulrik Söchting
Web links
- Collections of Caloplaca Lichen Microscopy