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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.

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

Sibbaldianthe bifurca is a species of flowering plant in the family Rosaceae which can be found in the steppes, grasslands and various slopes of Russia, Korea, and Mongolia at an elevation of 400–4,000 metres (1,300–13,100 ft). It is also found on sandy coasts of North and Northeast China. It was described by Carl Linnaeus in 1753 in his book Species Plantarum as Potentilla bifurca.

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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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.

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.

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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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Karpatiosorbus admonitor, previously classified as Sorbus admonitor and also called the Watersmeet whitebeam, is a species of whitebeam tree found in Devon, United Kingdom. It is known only from the Watersmeet Valley at Lynton, with two stray plants growing on the coast above Sillery Sands, Countisbury. It has also been nicknamed the no parking whitebeam in some newspapers.

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Hedlundia scannelliana, commonly known as Scannell's whitebeam, is a species of shrub or tree endemic to Ross Island near Killarney in southwest Ireland. It is one of the rarest tree species in the world; only five individual plants are known.

Hedlundia pseudomeinichii, known as false rowan and Catacol whitebeam, is a rare species of tree endemic to the Isle of Arran in south-western Scotland. It is believed to have arisen as a hybrid of the native European rowan (Sorbus aucuparia) and the cut-leaved whitebeam (Hedlundia pseudofennica) which is in turn a rowan/Arran whitebeam (Hedlundia arranensis) hybrid. Until 2020, only one living specimens of the Catacol whitebeam was known, at the time making it the rarest tree not only in Scotland, but joint rarest in the world with Wood's cycad. Another was recorded as a sapling, but is

Hedlundia leyana, commonly known as Ley's whitebeam, is a species of small tree which is endemic to two sites in southern Wales. It is thought to have arisen by hybridisation between the rowan and a member of genus Aria.