Aleksandr Sénnikov

Hedlundia hybrida (formerly Sorbus hybrida), the Swedish service-tree, Finnish whitebeam, or oakleaf mountain ash, is a species of whitebeam native to Norway, eastern Sweden, south-western Finland, and locally in Latvia.

Hedlundia mougeotii, the Vosges whitebeam or Mougeot's whitebeam, is a species of whitebeam native to the mountains of central and western Europe from the Pyrenees east through the Alps to Austria, and north to the Vosges Mountains.

Karpatiosorbus badensis is a species of plant in the family Rosaceae. It is endemic to Germany.

Sonchella is a genus of Asian flowering plants in the family Asteraceae. Species Sonchella dentata (Ledeb.) Sennikov - Russia (Altai, Tuva), China (Qinghai), Mongolia Sonchella stenoma (Turcz. ex DC.) Sennikov - Russia (Buryatiya, Chita), China (Tibet, Gansu, Inner Mongolia), Mongolia

Karpatiosorbus (Synonymy: Sorbus subgenus Tormaria Májovsky & Bernátová = S. subgenus Aria × subgenus Torminaria) is a genus of flowering plants in the family Rosaceae, native to Europe, including Crimea, and Algeria. Shrubs or small trees, they appear to have arisen via hybridization events between the clades Aria (Pers.) Host and Torminalis Medik. Many of its species propagate solely by apomixis. The genus name of Karpatiosorbus is in honour of Zoltán Kárpáti (1909–1972), who was a Hungarian (Geo-)Botanist, Taxonomist, Dendrologist and specialist in Sorbus (from central Europe). The genus

Hedlundia is a genus of plants in the rose family (of Rosaceae). They are shrubs or small trees that have a hybrid origin involving crosses between Aria and Sorbus sensu stricto. There are about 48 species distributed across central, western and southern Europe, Scandinavia, Turkey, the Caucasus, Crimea, and also central Asia. The term Hedlundia was published in 2017.

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Majovskya is a genus of flowering plants belonging to the family Rosaceae. They are shrubs or small trees, they appear to have arisen via hybridization events between the clades Aria (Pers.) Host and Chamaemespilus (L.) Crantz. It is native to Europe and found in Austria, Czechoslovakia, France, Germany, Poland, Spain and Switzerland. Majovskya sudetica has also be found in Ukraine in 2020. The genus name of Majovskya is in honour of Jozef Májovský (1920–2012), who was a Slovak botanist and Professor of Botany in Bratislava. This was due to "the development of the taxonomy of hybridogenous

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Scandosorbus is a genus of flowering plants in the rose family, Rosaceae. It includes two species of trees native to northern Europe. Scandosorbus intermedia (Ehrh.) Sennikov – Denmark, Norway, Sweden, Finland, Baltic states, Poland, and Germany Scandosorbus liljeforsii (T.C.G.Rich) Sennikov – southwestern Sweden Both species are the result of hybridization. S. intermedia was derived from an ancient hybridization among Aria, Sorbus, and Torminalis. S. liljeforsii is more recently derived from S. intermedia × Sorbus aucuparia. The genus was proposed to replace Borkhausenia Sennikov & Kurtto

Hedlundia velebitica is a species of plant in the family Rosaceae. It is endemic to Croatia.

Hedlundia pseudofennica, also called Arran service-tree or Arran cut-leaved whitebeam, is a species of plant in the family Rosaceae. Endemic to the Isle of Arran in Scotland, it is threatened by habitat loss. It is thought to be a naturally occurring hybrid between H. arranensis and Sorbus aucuparia, probably with additional backcrossing with S. aucuparia. Hedlundia arranensis is itself a hybrid between Aria rupicola and S. aucuparia. Apomixis and hybridization are common in some groups of Sorbus species.

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Normeyera is a genus of flowering plants in the rose family, Rosaceae. It includes nine species native to west-central Europe, ranging from France through Switzerland, Germany, Austria, Czechia and Slovakia to Poland. They are distinguished from other members of the Sorboid clade (Sorbus and relatives) by glabrous to white or grey tomentose leaves having a doubly serrate margin or with very small obtuse lobes. They are believed to be the result of hybridization from three clades, Aria × Chamaemespilus × Sorbus. Nine species are accepted. Normeyera atrimontis (Bernátová & Májovský) Sennikov &

Karpatiosorbus hybrida is a species of plant in the family Rosaceae. It is the result of a cross between common whitebeam (Aria edulis) and the chequer tree (Torminalis glaberrima), and is native to western and central Europe.

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Hedlundia austriaca or Austrian whitebeam is a species of whitebeam. Its berries, which are a pome fruit, are inedible to humans but attract birds. It is also grown as an ornamental plant.

Aria wilmottiana, commonly known as Willmott's whitebeam, is a species of whitebeam in the family Rosaceae. It is endemic to England, and is found in the Avon Gorge, in Somerset and Gloucestershire. It is threatened by habitat loss.

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