Angophora leiocarpa

Angophora leiocarpa is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in eastern Queensland and the adjacent northeastern New South Wales before ..

Description

Appearance and leaf

Angophora leiocarpa grows as a tree reaching heights of growth of up to 25 meters. The bark is smooth on the whole tree, pink, gray or cream-colored and peels off in small scale.

The simple leaves are always arranged alternately along the branches. In Angophora leiocarpa is available Heterophyllie, ie, the leaves of a plant differ in their size and shape. The leaves of young specimens are sitting and with stiff, simple hairs and bristly glandular hairs ( trichomes ) covered. They are broad - lanceolate, with a length of up to 10 cm and a width of about 1.5 cm or narrow - elliptic. At middle-aged specimens the leaves are straight, entire and dull green. The leaves of adult specimens are divided into petiole and leaf blade. Your petiole is 10 to 15 mm long. Their simple leaf blade is at a length of 7 to 14 cm and a width of 1 to 2.5 cm lanceolate with pointed Spreitengrund and pointed top. The leaf top and bottom is colored differently. The lateral veins are closely spaced at an obtuse angle to the main nerve. The cotyledons ( cotyledons ) are nearly circular.

Inflorescence and flower

Terminally on a 15 to 32 mm long, leafless inflorescence stem are several partial inflorescences in total composite inflorescences. The bald or stiff hairy flower stalk is 4-9 mm long. The egg-shaped flower buds are 4-7 mm long and have a diameter of 4 to 6 mm. The hermaphrodite flowers are creamy white. The flower cup ( hypanthium ) is smooth or slightly ribbed. The four sepals are reduced to four calyx teeth on the flower cups. The four petals have a length of 3 to 4 mm, and a width of about 3 mm each.

Fruit and seeds

The stalked fruit is ovoid with a length of 9 to 13 mm and a diameter of 8 mm to 11 mm and often tapering towards the tip. The disc is flat or depressed and concealed from the edge of the flower cup. The kneecap shaped seeds are regular and flattened, smooth and semi-gloss red.

Occurrence

The main distribution area of Angophora leiocarpa located in the eastern Queensland and the adjacent north-east of New South Wales, north of Grafton and Narrabri. Angophora leiocarpa is widely distributed and locally scattered frequently.

Angophora leiocarpa thrives mainly on deep sandy soils in floodplains or on sandstone base.

Taxonomy

The first description was in 1986 by Gregory John Leach under the name ( basionym ) Angophora costata subsp. leiocarpa LASJohnson ex GJLeach under the title A revision of the genus Angophora ( Myrtaceae ) in Telopea, Volume 2 (6 ), pp. 760 The type material, the label New South Wales: North Western Slopes: Just south of Warialda, near high School, Leach 423, August 25, 1976 ( LTB ). Isotype: NSW on. The new combination to Angophora leiocarpa ( LASJohnson ex GJLeach ) KRThiele & Chocoholics was in 1988 by Richard Kevin Thiele and Pauline Yvonne Chocoholics under the title A cladistic analysis of Angophora Cav. ( Myrtaceae ) in Caldistics, Volume 4 (1 ), pp. 41 more synonyms are Eucalyptus leiocarpa ( LASJohnson ex GJLeach ) Brooker and Angophora costata subsp. AAADAB.

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