Tuesday, August 16, 2011

Coastal Wattle - Acacia Oraria F. van Muell

Common name : Coastal Wattle
Family : Mimosaceae

This tree comes from east Indonesia down to Australia, with the height of the tree can reach 16 feet, and trunk diameter of up to 60 cm. This tree has a dense canopy, widened, at the time was young such as shrubs and can withstand a little shadow.
Inflorescence usually a raceme of heads on peduncles about 4-7 mm long, heads about 30-40 flowered, covered with a white bloom when immature. Stalked nectaries with orange glands present at the base of each flower in the head. Calyx lobes fused to about the middle, oblong, obtuse, about 1-1.4 mm long. Corolla lobes rather narrow, fused to the middle, about 1.5-1.9 mm long, corolla about 1.5 times as long as the calyx. Stamens about 3-4 mm long. Ovary somewhat scurfy.
Can grow on dry soil, fertilization occurs continuously and breeding by seed or stump. It the highest seed 1 cm. Planting the seeds should be under a shadow, germination began on day 8, and on day 15, 80% germination of sprouts have been seen and done on day 26-27.
Cotyledons obovate, about 4-5 x 3-4 mm. First leaf pinnate, second leaf bipinnate. By the third or fourth leaf stage: leaves bipinnate, petiole expanded and flattened. At the tenth leaf stage: leaves phyllodineous, elliptic or narrowly elliptic to slightly falcate, apex obtuse, base cuneate, glabrous, usually three main parallel veins run from the base to the apex; glands present at the apex of the leaf blade and also at the base almost on the petiole; stipules very small, visible only with a lens.

This tree, although small in diameter but have a very hard wood and durable.

No comments:

Post a Comment