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Eucryphia lucida, the leatherwood, is a species of tree or large shrub endemic to forests of western Tasmania, Australia. An attractive plant used in both horticulture and apiculture , it was promoted by the Tasmanian Branch of the then SGAP as an alternative to the Tasmanian blue gum ( Eucalyptus globulus ) for Tasmania's floral emblem.
After a tree is afflicted by sun scald it becomes much more vulnerable to decay organisms. The plant will create walls around the affected area, but sometimes it is not enough to block the infections. The leaves of the tree are also affected by sun scald, particularly on a bright sunny day following a period of warm cloudy humidity.
Studies generally considered tree response to competition in terms of absolute height or basal area, but Zedaker (1982) [77] and Brand (1986) [78] sought to quantify crop tree size and environmental influences by using relative growth measures.
The understory is the underlying layer of vegetation in a forest or wooded area, especially the trees and shrubs growing between the forest canopy and the forest floor. Plants in the understory comprise an assortment of seedlings and saplings of canopy trees together with specialist understory shrubs and herbs.
The tree is the sole source of food for the catalpa sphinx moth (Ceratomia catalpae), the leaves being eaten by the caterpillars. When caterpillars are numerous, infested trees may be completely defoliated. Defoliated catalpas produce new leaves readily, but with multiple generations occurring, new foliage may be consumed by subsequent broods.
It is a tree growing to a height of 18–30 m (59–98 ft) tall with a trunk .5 to 1 m (1 ft 8 in to 3 ft 3 in) in diameter. The leaves are bipinnate, 7.5–15 cm (3–6 in) long, with one to four pairs of pinnae, each pinna with 6–18 leaflets.
At or on the apex of a structure, usually a shoot, a stem, or the trunk of a tree, e.g. an apical meristem or an apical bud. apiculate especially of leaves, ending in a short triangular point. See also Leaf shape. apiphily A form of pollination whereby pollen is distributed by honey bees. apo-A prefix meaning "away from, separate, without ...
The leaves are green above and brownish underneath. [36] The flowers are very fragrant and the leaves are narrow and leathery. [37] 'Goliath' was developed by Caledonia Nurseries of Guernsey, and has a bushier habit and globular flowers of up to 30 cm (12 in) diameter. Long-flowering, it has oval leaves which lack the brownish hair underneath. [36]