Syzygium jambos

Leaves and fruits

Syzygium jambos, also known as rose apple is a tree of the myrtle family ( Myrtaceae ). The species originates from Southeast Asia and is cultivated worldwide in the tropics because of their fruits.

Description

Syzygium jambos is up to 10 meters tall tree with a short trunk, broad crown and terete or nearly terete branches. The leaves are arranged. They are simple and have a 5 to 10 mm long stem. The leathery or stiff paper-like leaf blade is 8 to 26 inches long and 2 to 4.5 cm wide, lanceolate, ovate lanceolate, oblong or linear, acuminate to acuminate wedge base. Both sides are glossy green and filled with oil glands. There are 8 formed protruding veins on the underside to 25. Young leaves are pink or red in color and grow in tufts limp.

The flowers are arranged in terminal panicles few with a 1 to 3.5 centimeters long stalk or stand individually in the leaf axils. The single flowers have a diameter of 3 to 4 centimeters and are sweet scented. The flower cups is 0.8 to 1.5 inches long and runs conical. The four sepals are 5-8 mm long, 6-9 mm wide, rounded to triangular- ovate. The petals are 1.4 to 1.5 inches long, white or pink, broadly ovate and finally bent back. The numerous stamens are creamy white and 1.5 to 2.8 inches long, the anthers about 1.5 mm. The scar is 2 to 3.5 millimeters long. When fruits are 2.5 to 5 centimeters thick, top-to pear-shaped, yellowish, whitish or red, single or two-seeded berries stone made ​​with permanent, thickened sepals. The fruits have a rose-like aroma and a refreshing but somewhat insipid taste. The species flowers from March to April, the fruits ripen from May to June or November-December.

Dissemination

The original distribution area is located in Southeast Asia. Where it grows in mixed forests on mountain slopes, river banks and river valleys at altitudes of 100 to 1500 meters. The species is however cultivated in the tropics worldwide as fruit, ornamental or shade tree.

System

Syzygium jambos is a species in the genus Syzygium in the myrtle family ( Myrtaceae ), subfamily Myrtoideae, Tribe Syzygieae. The species was first described by Carl Linnaeus in 1753 in his work Species Plantarum as Eugenia jambos ( basionym ). Arthur Hugh Garfit Alston 1931, it ordered the genus Syzygium to.

There are three varieties:

  • Syzygium jambos jambos var with 12 to 25 centimeters long, lanceolate or oblong leaf blades, 2 to 2.8 cm long scar and yellow fruits.
  • Syzygium jambos var linearilimbum Hung T. Chang & RH Miao with lineal, 18 to 26 centimeters long, leaf blades and solitary flowers in the leaf axils.
  • Syzygium jambos var tripinnatum ( Blanco ) C. Chen with 8 to 12 inches long, ovate - lanceolate or oblong leaf blades, 3 to 3.5 cm long scars and red fruits.

Use

The fruits are eaten fresh or made ​​into jam, jelly, or drinks. The trees are planted as ornamental tree or shade tree.

Evidence

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