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Cresponea
Scientific Name: Cresponea
Family: Opegraphaceae
Category: Lichen
Growth:
Duration:
Other Names:
Cresponea: A Genus of Lichens
Cresponea is a genus of lichens belonging to the family Roccellaceae. These lichen species were previously classified under the genus Lecanactis.
Taxonomy and Nomenclature
- Genus: Cresponea Egea & Torrente
- Family: Roccellaceae
- Kingdom: Fungi (implied as a lichenized fungi)
- Class: Ascomycetes (implied as Ascomycota)
Species Examples:
- Cresponea premnea (Ach.) Egea & Torrente
- Synonym: Lecanactis premnea
- Cresponea flava (Vain.) Egea & Torrente
- Cresponea sorediata Elix, vstedal & Gremmen
- Cresponea japonica A.Sakata & H.Harada
- Cresponea melanocheloides
- Cresponea plurilocularis
- Cresponea litoralis
- Cresponea leprieurii
Cresponea premnea var. saxicola is noted as an accepted taxonomic variant. Bilimbia premnea (Ach.) H. Olivier and Lecanactis plocina are also mentioned in relation to Cresponea premnea.
Distribution and Habitat
- Cresponea flava is found in Ecuador and the Galápagos Islands.
- Cresponea sorediata was discovered on Gough Island.
- One record shows Cresponea in British Columbia, Clearwater Valley, growing on Thuja bark near a river shore.
- The text mentions that Cresponea genus was poorly known in Japan.
- Cresponea premnea var. premnea is more common growing on well-lit bark of old deciduous trees.
- One record shows Cresponea premnea from Dorset.
Morphological Characteristics
- The thallus (lichen body) can be thin, effuse, or immersed, and grey or greenish-grey in color.
- Apothecia (fruiting bodies) are black with a thick proper margin.
- Disks are initially thinly grey-pruinose and flat.
- The thallus can be small, thin, uniform, continuous, and smooth to granulose.
- It can be definite and limited by a dark brown-black prothalline line, or diffuse.
- Cresponea melanocheloides has a crustose thallus, green to brownish-yellow.
- Cresponea flavosorediata has yellow-olive soralia and apothecia with yellow pruina.
Ecological Role
- The text indicates that Cresponea is not rare, threatened, or alien in Western Australia.
Other Information
- Cresponea flavosorediata has 7-9 septate ascospores, 26-38(-50)50-65 m