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Giant bamboo (Dendrocalamus asper)

Petung or betung or dragon bamboo or giant bamboo (Dendrocalamus asper) is a plant species in Poaceae, has a large and strong, has a high adaptability, is used for building materials and structural wood for construction and shoots are cooked for vegetables.

D. asper grows in clumps, purplish black buds, covered by blackish brown velvet. Height of 20 m with curved ends, section length of 40-50 cm, diameter 12-20 cm and thickness of 1-4 cm. The color green or dark green or purplish green or whitish green or laced with white spots.

Dlium Giant bamboo (Dendrocalamus asper)

The boundaries of the segment are surrounded by hanging roots, 50x25 cm reed midribs, covered by blackish brown velvet, rounded ears and sometimes curled up to the base of the reed fronds, 7 mm high with velvety blades up to 5 mm. Irregular jagged ligula, height 7-10 mm with short velvets up to 3 mm.

The leaf fronds are triangular with the base narrowed and hugged upside down. Leaves on a branch with a hollow or pale stem, without ears, ligula 2 mm, strands 15-45x1-8.5 cm, the lower side is slightly veiled and short leaf stalks.

Flowers in panicles on non-leafy branches with spikelet clusters on each segment. Ellipsoid shaped spikelet, 6-9x4-5 mm, flat to the side, has 1-2 gluma and 4-5 florets.

Giant bamboo grows best at an altitude of 400-500 m, rainfall an average of 2,400 mm/year, temperature of 25F, likes a lot of sunlight on alluvial, moist and fertile soils, but they are also able to grow to a height of 1,910 m and dry places in the highlands and lowlands.

Petung grows by spreading roots and rhizomes underground. The speed of spread is determined by the type of soil and local climate. Rizoma in the soil can be cut, but rhizomes separated from the main family will usually die.



The stem is very thick, strong and durable where the water content of 8% has a wood density of 0.7-0.8 g/cm3, the moisture content of 15% has a fracture firmness of 103 N/mm2, compressive firmness parallel to the direction of the fiber is 31 N/mm2 and firmness the shear is 7.3 N/mm2.

Betung bamboo is used as building material and structural wood for the construction of various buildings including house poles, boats, tobacco warehouse frames, bridges, waterways, musical instruments, furniture, household appliances and crafts, laminate boards, pulp, chopsticks, toothpicks and etc.

Big and sweet shoots are popular for pickles and various dishes. The quality of these shoots is considered the best compared to other bamboo species as food ingredients, including if canned.

Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Genus: Dendrocalamus
Species: D. asper

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