Skip to main content

Giant bamboo (Dendrocalamus asper)

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

D. asper grows in clumps, the shoots are purplish black and covered by blackish brown velvet. 20 m high with curved ends, 40-50 cm long, 12-20 cm in diameter and 1-4 cm thick. Green or dark green or purplish green or whitish green or mottled white by lichen.

Dlium Giant bamboo (Dendrocalamus asper)


The margins of the internodes are surrounded by hanging roots, the reed midrib 50x25 cm, covered by blackish brown velvet, the ears are rounded and sometimes curled to the base of the reed midrib leaf, 7 mm high with jute hairs up to 5 mm. Ligula serrated irregularly, 7-10 mm high with short bristles up to 3 mm.

The leaves of the reed midrib are triangular with a narrowed base and bent back. Leaves on twigs with loose midrib or sparsely pale, without ears, ligular 2 mm, strands 15-45x1-8.5 cm, slightly hairy underside and short petioles.

Flowers in panicles on leafless twigs with clusters of spikelets on each internode. The spikelets are ellipsoidal, 6-9x4-5 mm, flattened to the sides, have 1-2 gluma and 4-5 florets.

Giant bamboo grows best at an altitude of 400-500 m, average rainfall 2,400 mm/year, temperature 25F, likes lots of sun and moist and fertile alluvial soil, but is also able to grow up to 1910 m elevation and places dry.









Petung grows by spreading roots and rhizomes underground. The speed of spreading is determined by the type of soil and the local climate. Rhizomes in the soil can be cut if desired and if separated from the main clump they will usually die.

Thick, strong and durable stem at 8% moisture content has a wood density of 0.7-0.8 g/cm3, at 15% moisture content it has a fracture strength of 103 N/mm2, the compressive strength parallel to the fiber direction is 31 N/mm2 and the tensile strength is 31 N/mm2. shear is 7.3 N/mm2.

Bamboo betung is used as a building material and structural wood for the construction of a wide variety of buildings including house posts, boats, tobacco shed frames, bridges, waterways, musical instruments, furniture, household and handicraft utensils, laminated boards, pulp, chopsticks, toothpicks and etc.

The large and sweet shoots are favored by people for pickling and various dishes. The quality of these shoots is considered the best compared to shoots of other bamboo species as food ingredients, including when canned.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Liliopsida
Order: Poales
Family: Poaceae
Subfamily: Bambusoideae
Tribe: Bambuseae
Subtribe: Bambusinae
Genus: Dendrocalamus
Species: Dendrocalamus asper

Popular Posts

Purwaceng (Pimpinella pruatjan)

Purwaceng or purwoceng or antanan gunung or Viagra of Java ( Pimpinella pruatjan or Pimpinella priatjan ) are small termas growing horizontally in Apiaceae, growing in villages on Dieng Plateau, Central Java Province, Indonesia, at 1,500 to 2,000 meters above sea level, the roots have medicinal properties for aphrodisiacs and are usually processed in powder form for a mixture of coffee or milk. P. pruatjan grows flat on the ground but does not propagate, small leaves are reddish green for 1-3 cm in diameter. This plant is only found in Java and grows in high mountain areas. A low population where industrial demand is very high results in increasingly scarce. Another place that is likely to become a purwaceng habitat is the Iyang Mountains and the Tengger Mountains in East Java Province. Efforts to multiply and cultivate have a big problem where these plants have difficulty producing seeds. In vitro propagation research through tissue cultivation has been carried out to overcome ...

New living fossil, Amethyst worm lizard (Amphisbaena amethysta), from Espinhaço Mountain Range, Brazil

NEWS - New species from the northern Espinhaço Mountains, Caetité municipality, Bahia state, Brazil. Amethyst worm lizard ( Amphisbaena amethysta ) is the 71st species of the genus with 4 precloacal pores and the 22nd species of Caatinga morphoclimatic domain. Identification of the new species shows the reptiles of the Mountains are far from complete and may contain greater diversity of endemic taxa. A. amethysta can be distinguished by its anteriorly convex snout, slightly compressed and unkeeled, pectoral scales arranged in regular annuli, four precloacal pores, distinct head shield, 185-199 dorsal and half annuli, 13-16 caudal annuli, a conspicuous autotomy spot between the 4th-6th caudal annuli, 16-21 dorsal and ventral segments in the middle of the body, 3/3 supralabials, 3/3 infralabials and a smooth and rounded tail tip. A. amethysta occurs in areas with an average elevation of 1000 meters in patches of deciduous and semi-deciduous forests associated with valleys, slopes, fore...

Six new species forming the Sumbana species group in genus Nemophora Hoffmannsegg 1798 from Indonesia

NEWS - Sumbawa longhorn ( Nemophora sumbana Kozlov, sp. nov.), Timor longhorn ( Nemophora timorella Kozlov, sp. nov.), shining shade longhorn ( Nemophora umbronitidella Kozlov, sp. nov.), Wegner longhorn ( Nemophora wegneri Kozlov, sp. nov.), long brush longhorn ( Nemophora longipeniculella Kozlov, sp. nov.), and short brush longhorn ( Nemophora brevipeniculella Kozlov, sp. nov.) from the Lesser Sunda Islands in Indonesia. The Lesser Sunda Islands consist of two parallel, linear oceanic island chains, including Bali, Lombok, Sumbawa, Flores, Sumba, Sawu, Timor, Alor, and Tanimbar. The oldest of these islands have been continuously occurring for 10–12 million years. This long period of isolation has allowed significant in situ diversification, making the Lesser Sundas home to many endemic species. This island chain may act as a two-way filter for organisms migrating between the world's two great biogeographic regions, Asia and Australia-Papua. The recognition of a striking cli...