Karpatiosorbus adeana
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| Karpatiosorbus adeana | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Karpatiosorbus |
| Species: | K. adeana
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| Binomial name | |
| Karpatiosorbus adeana (N.Mey.) Sennikov & Kurtto
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| Synonyms[2] | |
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Karpatiosorbus adeana, the Ades whitebeam, is a species of plant that belongs to the complex of bastard whitebeams (Sorbus latifolia agg.) within the family Rosaceae. This deciduous tree is the result of a hybridization between the common whitebeam (Sorbus aria) and the wild service tree (Sorbus torminalis).[3] As an agamospermous species, it reproduces asexually. It is endemic to the Bärental and the adjacent Kleinziegenfelder Valley in Upper Franconia (Bavaria, Germany).
Description
[edit]The Ades whitebeam is a deciduous tree. The leaves are oval-shaped with pronounced and deeply lobed, slightly spreading teeth.[4] The leaf sizes vary between lengths of 6 to 8 cm (2.4 to 3.1 in) and widths of 5 to 6 cm (2.0 to 2.4 in);[4] the short lobe side is usually over 1 cm (0.39 in) long.[4] The leaf base angle is generally less than 90°.[4] Each leaf typically has about eight pairs of veins.[4] (See also leaf shape) The pomes ripen in early autumn. They are small, pear-shaped, yellowish fruits with a red-orange cheek.[4] Reproduction occurs with seeds that are produced without sexual processes, making this plant species agamospermous.[5]
Discovery and naming
[edit]The Ades whitebeam, like the closely related Kordigast Whitebeam, was discovered in the 1990s by biologist Norbert Meyer, who specializes in whitebeam species, and was named after the botanist Alfred Ade.[5] Ade was active in the Weismain region in the early 20th century and was the first to extensively describe the local flora.[6]
Distribution and conservation
[edit]This is an endemic species in the Bärental and the adjacent Kleinziegenfelder Valley.[5] It grows exclusively in the local beech forests, on the numerous prominent rocks, and on fallow grasslands.[7]
Due to its small distribution range, it is generally considered quite rare, but it is not considered endangered by the Federal Species Protection Ordinance, and thus is not afforded special protection.[8] In Upper Franconia, however, it is considered potentially endangered due to its rarity.[7] Within Germany, Bavaria holds the sole responsibility for the conservation of this species.[5]
References
[edit]- ^ Beech, E.; Meyer, N.; Rivers, M.C. (2017). "Sorbus adeana". IUCN Red List of Threatened Species. 2017: e.T86089590A86089594. doi:10.2305/IUCN.UK.2017-2.RLTS.T86089590A86089594.en. Retrieved 27 February 2025.
- ^ "Karpatiosorbus adeana". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 27 February 2025.
- ^ Sorbus adeana N. Mey. at rz.uni-karlsruhe.de (Error: unknown archive URL) (archived (Date missing))
- ^ a b c d e f Key to "Sorbus in Bavaria" (N. Meyer, L. Meierott, H. Schuwerk & O. Angerer), offene-naturfuehrer.de, retrieved 30 December 2012
- ^ a b c d List of Plants of Global or National Importance in the Upper Franconia Region at regierung.oberfranken.bayern.de (Error: unknown archive URL) (archived (Date missing)), regierung.oberfranken.bayern.de
- ^ Erich Walter: Berg und Dorf - Kordigast und Burkheim. Government of Upper Franconia, Bayreuth, 1999, pp. 32–42
- ^ a b Short Profile of the Kordigast Whitebeam at flora-oberfranken.de (Error: unknown archive URL) (archived (Date missing)), flora-oberfranken.de, retrieved 30 December 2012
- ^ "Karpatiosorbus adeana". FloraWeb.de (in German).