E. F. Warburg

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Quercus hintonii is a rare species of oak. It is endemic to the central Mexican State of Mexico. It is a deciduous tree growing up to 15 metres (49 feet) tall with a trunk as much as 50 centimetres (20 inches) in diameter. The leaves are thick and leathery, up to 21 cm long, elliptical or egg-shaped, very often with no teeth or lobes but sometimes with a few pointed teeth. The species is threatened by habitat loss.

Gentianella anglica, the early gentian, is a species of flowering plant in the genus Gentianella, native to Great Britain. Gentianella anglica is endemic to Great Britain and its centre of distribution is in Dorset, Wiltshire, and the Isle of Wight.

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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.

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.

Aria vexans, commonly known as bloody whitebeam, is a rare species of tree in the family Rosaceae. It is endemic to England and is found along the coast between Culbone in Somerset and an area just west of Trentishoe in Devon. It can be seen in the Exmoor National Park. It is threatened by habitat loss.

Aria porrigentiformis, commonly known as the grey-leafed whitebeam, is a species of whitebeam endemic to England and Wales.

Aria lancastriensis, commonly known as the Lancashire whitebeam, is a species of deciduous tree or shrub in the family Rosaceae, growing to 6 m (20 ft). It is endemic to England, and is found within a 30 km (19 mi) radius from Morecambe Bay, in Lancashire. It is threatened by habitat loss. It has oval leaves. White blossom in spring is followed by orange to red berries in autumn.

Aria hibernica, commonly known as Irish whitebeam, is a species of whitebeam endemic to Ireland. It occurs in most counties, usually as scattered individuals, or in small groups. The IUCN has currently listed this species as a vulnerable species and its population is currently stable.

Aria eminens, commonly known as the round-leaved whitebeam, is a species of plant in the family Rosaceae. It is endemic to Great Britain and is threatened by habitat loss.

Karpatiosorbus devoniensis is known by the English name of Devon whitebeam and formally as Broad-leaved Whitebeam. When the fruit was reported as sold at Barnstaple Pannier Market the name French Eagles was used, apart from 1929 when they were reported as eagle-berries. When the trees were reported as seen growing wild on botanical walks they were referred to as French Hails (once each as French hail and French Hales). Broad-leaved white-beam, which was the common name until Devon Whitebeam took over, was used once in 1907. The term Otmast was used once as a pet name, as its true identity was

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