1. Description

2. Taxonomy and naming

3. Distribution and habitat

4. Ecology

5. Use

6. References

Eucalyptus lehmannii, commonly known as bushy yate, is a eucalypt in the myrtle family Myrtaceae endemic to the south-west of Western Australia.^[1] It is a small tree with an oval, spreading form and dense foliage which sometimes reaches to the ground. It is widely cultivated in Australia and the United States because of its ornamental shape and decorative flowers, buds and fruit. There has been some confusion about its classification because of its ability to hybridise.

Description

Eucalyptus lehmannii is a sometimes multi-trunked mallee with smooth bark which is whitish grey to grey-brown and orange-brown and which sheds in strips.

The stems of young plants are initially triangular in cross-section with leaves that are alternate, oblong to elliptical or lance-shaped, 5–8 cm long and 1–3 cm wide, glossy green on the upper surface and dull blue-green below. Older stems are smooth and round with alternate leaves. The adult leaves have a petiole 0.1–1.5 cm long and a blade elliptical to oval-shaped, about 4.5–9.5 cm long and 0.7–2.8 cm wide and both surfaces glossy light to mid-green. The oil glands in the leaves common to all eucalypts, are obscure or scattered.

The inflorescences appear in the axils of the leaves, have a flattened stalk 4–11 cm which curves downwards as the flowers open. There may be 11–19 or more buds in each inflorescence, with their bases joined. By the time the bud opens, it is about 3.3–6.5 cm long, including the cap (strictly the operculum) and 0.5–1.0 cm wide at the base of the cap. The stamens are erect and greenish-yellow.^[2]

Taxonomy and naming

The species was originally in 1844 named by Schauer in Plantae Preissianae as Symphyomyrtus lehmannii. In 1867, George Bentham in Flora Australiensis placed it in the genus Eucalyptus as Eucalyptus lehmannii^[3] after Johann Georg Christian Lehmann who was Professor of Botany and Director of the Botanic Gardens in Hamburg and editor of Plantae Preissianae.^[2][4] There is some confusion between the species E. lehmannii and E. conferruminata - some authors place this tree in E. conferruminata.^[5] Others discriminate between these two species on characters such as operculum length - E. conferruminata is said to have a relatively short operculum.^[2]

Of the eight species in series Lehmannianae, four species (Eucalyptus lehmannii, E. conferruminata, E. mcquoidii and E. arborella) have the buds in each axillary cluster, fused basally.^[6]

Distribution and habitat

Bushy yate is found in southern coastal and subcoastal areas from east of Albany towards Israelite Bay, including the Stirling Range.^[2] It occurs in the Esperance Plains, Jarrah Forest, Mallee and Warren biogeographic regions of Western Australia growing in sandy soils over granite or quartzite, often with gravel on rocky hills and coastal dunes.^[7]

Ecology

Use

Bushy yate is a useful ornamental in Australia as a small screen, an individual specimen or as a grove.^[9] It has also been grown in other countries, including Europe and South Africa. In the United States it is described as "a useful screen or attractive courtyard tree for areas as far north as San Francisco Bay".^[10]

References

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