Macadamia tetraphylla

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Macadamia tetraphylla
Macadamia tetraphylla branch & flower1.JPG

Macadamia tetraphylla

Systematics
Eudicotyledons
Order : Silver tree-like (Proteales)
Family : Silver tree family (Proteaceae)
Subfamily : Grevilleoideae
Genre : Macadamia
Type : Macadamia tetraphylla
Scientific name
Macadamia tetraphylla
LASJohnson

Macadamia tetraphylla is a species ofthe silver tree family (Proteaceae). She comes from the southeast of Australia. Its edible fruits, the macadamia nuts, are known.

description

Macadamia tetraphylla grows as a small to medium-sized tree , often with a short trunk that branches off just above the ground, and reaches heights of 3 to 18 m.

The leathery leaves stand in groups of four, rarely three or five, in whorls on the branches. When it shoots, the leaves are reddish and slightly hairy, the hairs are lost later. The petiole is missing or measures 0.4 cm or less. The leaves are 7 to 30 cm long and 1.4 to 6 cm wide. The leaf blade is oblong to lanceolate, broadest above the center. The leaf margin is slightly wavy and serrated regularly and spiky. The leaf blade ends pointed or with an attached tip. The upper side of the leaf is slightly shiny, the underside is lighter, the central rib is clearly visible on both leaf sides.

The racemose inflorescence is 5.5 to 38 cm long and two flowers are in the axilla of a bract . The inflorescence axis is hairy yellowish-brown. The cream-colored or pink-colored, hairy bracts are 0.55 to 1.5 cm long. The anthers are 0.7 to 2.2 mm long. The ovary and the base of the style are hairy brownish.

The fruit is round, slightly pointed at the front, with a diameter of 2.4 to 5 cm. It surrounds the individual seeds with a leathery, 2 to 9 mm thick shell ( pericarp ) . The woody, sometimes wrinkled seed coat (testa) is 2 to 6 mm thick.

distribution

Macadamia tetraphylla is native to a small area in northern New South Wales and southeast Queensland . It grows there in rainforests.

use

Green, closed fruits.

The seeds of Macadamia tetraphylla are edible. Mostly hybrids of Macadamia tetraphylla and Macadamia integrifolia are grown .

Individual evidence

  1. ^ GJ Harden: Macadamia . In: Flora of New South Wales . ( PlantNET ).
  2. ↑ a b c CL Large: Macadamia . In: Flora of Australia . tape 16 , 1995 ( Australian National Botanic Gardens ).
  3. ^ Huaxing Qiu, Peter H. Weston: Macadamia . In: Wu Zhengyi, Peter H. Raven (Ed.): Flora of China . tape 5 . Missouri Botanical Garden Press, St. Louis 2004, pp. 199 ( eFloras.org ).
  4. ↑ Rough-shelled Bush groove - profile . Department of Environment & Climate Change NSW. Retrieved December 5, 2010.

Web links

Commons : Macadamia tetraphylla  - album with pictures, videos and audio files