Garis bamboo (Bambusa heterostachya)

Garis bamboo (Bambusa heterostachya) is a species of plant in Poaceae, bamboo shoots are slender and triangular in shape, green midrib with yellow stripes covered with black hairs, striped midrib ears and erect midrib leaves.

G. heterostachya has erect reeds, 18-23 meters high, 6-10 cm in diameter, 6-9 mm thick walls, 37-42 cm long segments, plain segments, young reeds are bright green and covered with white wax, old reeds dark green and yellow stripes.

The reed sheath does not fall off easily, the adaxial surface is glabrous, light brown and covered with brown or black hairs on the abaxial surface, 10-14 cm long and 11-15 cm wide. The ears of the reed midrib are rounded, slightly sticking out, 7-8 mm high and the kejur feathers have a length of 8-9 mm.

Serrated ligula with a length of 2-3 mm, hairs 4-6 mm long, reed midrib leaves erect, triangular with a narrow base, 5-6 cm long, 4-4.5 cm wide. Branching consists of 3-10 points on each internode with one lateral branch larger than the other, the branch grows 1-1.5 meters from the ground.

The leaves are 32-37 cm long. 3.9-4.2 cm wide, upper surface smooth, lower surface glabrous, stalk bright green. Ears rounded, 1-2 mm high and 2-3 mm thick fur. Ligula serrated, 1 mm long with cheese feathers 2-3 mm.

TAXON

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Liliopsida
Order: Poales
Family: Poaceae
Subfamily: Bambusoideae
Tribe: Bambuseae
Subtribe: Bambusinae
Genus: Bambusa Schreb. in Gen. Pl., ed. 8[a]. 1: 236 (1789)
Species: Bambusa heterostachya (Munro) Holttum in J. Arnold Arbor. 27: 341 (1946)

HOMOTYPIC SYNONYMS

Gigantochloa heterostachya Munro in Trans. Linn. Soc. London 26: 125 (1868)

HETEROTYPIC SYNONYMS

Bambusa diversistachya Munro in Trans. Linn. Soc. London 26: 126 (1868)
Bambusa latispiculata (Gamble) Holttum in J. Arnold Arbor. 27: 341 (1946)
Gigantochloa latispiculata Gamble in Ann. Roy. Bot. Gard. (Calcutta) 7: 67 (1896)

PUBLICATIONS

Aung, Y.L., Aung, M.H., Tan, Y. & Jin, X. (2025). An updated checklist of vascular plants of Myanmar. PhytoKeys 261: 135-364.

Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.

Turner, I.M. (1995 publ. 1997). A catalogue of the Vascular Plants of Malaya. Gardens' Bulletin Singapore 47(2): 347-655.

VERNACULAR NAME

English: Garis bamboo
Indonesia: Bambu garis
Java: Pring garis

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Screw tree (Helicteres isora)

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