Английская Википедия:Boronia citriodora

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Boronia citriodora, commonly known as lemon-scented boronia, lemon plant or lemon thyme, is a woody shrub that is endemic to Tasmania. It has pinnate leaves and white to pink flowers that are arranged singly or in groups of up to seven, in the leaf axils or on the ends of the branches.

Файл:Boronia citriodora 1.jpg

habit in a subalpine sclerophyll woodland

Description

Boronia citriodora is a woody shrub that is sometimes prostrate, otherwise erect and growing to a height of Шаблон:Convert. It has pinnate leaves that are Шаблон:Convert long and Шаблон:Convert wide in outline with between three and nine leaflets, on a petiole Шаблон:Convert long. The end leaflet is narrow elliptic to narrow lance-shaped, Шаблон:Convert long and Шаблон:Convert wide. The side leaflets are similar but longer. The flowers are white to pink and are arranged singly or in groups of up to seven in leaf axils or on the ends of branches on a stalk Шаблон:Convert long. The four sepals are triangular, Шаблон:Convert long and wide. The four petals are Шаблон:Convert long and the eight stamens have a few short hairs. Flowering occurs from November to February and the mature fruit are smooth, Шаблон:Convert long and Шаблон:Convert wide.

Taxonomy and naming

Boronia citriodora was first formally described in 1855 by Joseph Dalton Hooker from an unpublished description by Ronald Campbell Gunn and the description was published in The botany of the Antarctic voyage of H.M. Discovery ships Erebus and Terror. The name is derived from the characteristic lemon scent of the foliage. Hooker noted that the plant has a "strong and delicious smell of lemons" and that the species was called the 'lemon-plant' by early Tasmanian colonists.

In 2003, Marco Duretto described three subspecies:

• Boronia citriodora subsp. citriodora that has smooth sepals and leaves less than Шаблон:Convert long;
• Boronia citriodora subsp. orientalis that has hairy sepals;
• Boronia citriodora subsp. paulwilsonii that has smooth sepals and at least some leaves more than Шаблон:Convert long.

Distribution and habitat

Lemon-scented boronia grows in heath, woodland and near rainforest, often in rocky places.

• Subspecies citriodora only grows on the Central Highlands of Tasmania, at altitudes above Шаблон:Convert with disjunct populations further south, including on Mount Field.
• Subspecies orientalis is only known from Ben Lomond and Mount Barrow;
• Subspecies paulwilsonii is only known from the south-west of Tasmania, south from Macquarie Harbour and west from Mount Shea.

Use in horticulture

Boronia citriodora is cultivated as an ornamental plant for use in gardens. It tolerates sun, shade, wind, heavy frost; and dry, sandy or waterlogged soils.