Skip to main content

Amboyna pine (Agathis dammara)

Damar or amboyna pine (Agathis dammara) is a plant species in the Araucariaceae, a large tree with a height of up to 65 meters, a long, round cylindrical trunk with a diameter of more than 2 meters, cultivated as an industrial forest in tropical mountains for sap that is processed into copal.

A. dammara has a grayish or light brown or black bark with slightly reddish, finely dimpled to silvery and thin scales or with lots of resin or coarse blisters, peeling off in small pieces so as to be slightly epiphytic.

Dlium Amboyna pine (Agathis dammara)


Opposite leaves, oval-shaped, very variable even on a single tree, tapering towards a rounded tip, thick fleshy and light to dark green in color. Young trees are lanceolate and sharp. Old tree is long oblong with rounded top, 6-8 cm long, 2-3 cm wide with 1-8 mm stalk.

Ripe seed cones are ovoid, 10.5x9.5 cm, cylindrical with loose surfaces, basal bracts form loose cupules and are often square, conical scales are almost triangular in shape, upper corners of scales are broad and thin rounded. The seeds are subovoid, 1.5 cm long and up to 1.3 cm long on one wing.

Amboyna pine grows naturally in lowland rain forests to an altitude of 1,200 meters. It is planted for harvesting resin which is processed into copal. Resin is the sap that comes out when the bark is injured. The sap will flow out and freeze in the air. Over time this sap will harden. Sap is also obtained from underground deposits.

The wood density is 380-660 kg/m3, whitish in color, not durable, not strong and is only used as a board under the roof. Damar tree is also preferred as a shade plant for gardens and roadsides. Upright header rises with a branch that is not too wide.







Kingdom: Plantae
Phylum: Tracheophyta
Class: Pinopsida
Order: Pinales
Family: Araucariaceae
Genus: Agathis
Species: Agathis dammara

Popular Posts

Humpback whales (Megaptera novaeangliae) manufacture bubble-nets as tools to increase prey intake

NEWS - Humpback whales ( Megaptera novaeangliae ) create bubble net tools while foraging, consisting of internal tangential rings, and actively control the number of rings, their size, depth and horizontal spacing between the surrounding bubbles. These structural elements of the net increase prey intake sevenfold. Researchers have known that humpback whales create “bubble nets” for hunting, but the new report shows that the animals also manipulate them in a variety of ways to maximize catches. The behavior places humpbacks among the rare animals that make and use their own tools. “Many animals use tools to help them find food, but very few actually make or modify these tools themselves,” said Lars Bejder, director of the Marine Mammal Research Program (MMRP), University of Hawaii at Manoa. “Humpback whales in southeast Alaska create elaborate bubble nets to catch krill. They skillfully blow bubbles in patterns that form a web with internal rings. They actively control details such ...

Tanglehead (Heteropogon contortus)

Tanglehead ( Heteropogon contortus ) is a species of Poaceae, an erect grass, up to 65 cm tall, with leaves up to 13 cm long and 0.5 cm wide. The inflorescence is at the top and hairy. The tip is black. This plant forms dense colonies in forests, agricultural lands, roadsides, and abandoned areas. TAXON : Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Liliopsida Order: Poales Family: Poaceae Subfamily: Panicoideae Tribe: Andropogoneae Subtribe: Anthistiriinae Genus: Heteropogon Pers. in Syn. Pl. 2: 533 (1807) Species: Heteropogon contortus (L.) P.Beauv. in J.J.Roemer & J.A.Schultes, Syst. Veg., ed. 15[bis]. 2: 836 (1817) HOMOTYPIC SYNONYMS : Andropogon contortus L. in Sp. Pl.: 1045 (1753) Heteropogon contortus var. hirtus Hack. in C.F.P.von Martius & auct. suc. (eds.), Fl. Bras. 2(3): 267 (1883) Heteropogon hirtus Pers. (1807) Holcus contortus (L.) Stuck. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 48 (1904) Sorghum contortum (L.) Kuntze in Revis. Gen. ...

Cockspur coral tree (Erythrina crista-galli)

Velvet coral tree or cockspur coral tree ( Erythrina crista-galli ) is a species of plant in the Fabaceae family. It is a small tree, 5-8 meters tall, with a trunk circumference of about 50 cm, irregular branches, light wood, and fissured, soft, and light brown bark. The taproot is white. The leaves are ovate, with three strands, dark green and glossy on the upper surface, and pale green on the underside. The central lobe is up to 17 cm long and up to 11 cm wide. The left and right lobes are up to 15 cm long and up to 10 cm wide. The flowers are red, arranged in racemes, at the apex, pentameric, complete, and bilaterally symmetrical. The flowers are up to 6 cm long and 4 cm wide. The pods are long, containing about 8 seeds, green when young and turning brown as they mature. The seeds are ovate, flat, and brown. It grows well in lowlands up to an elevation of 1,500 meters, with an annual rainfall of 800-1,500 mm/year, and a temperature of 20-32°C. It thrives in well-drained soils, but...