Gigantochloa macrostachya

Gigantochloa macrostachya Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 42 (4), 1874: 251.

    • Synonyms: Gigantochloa kachinensis É. G. Camus, Bamb., 1913: 141; Gigantochloa kathaensis É. G. Camus, l.c.; Gigantochloa mogaungensis É. G. Camus, l.c.; Gigantochloa tekserah É. G. Camus, l.c.; Gigantochloa toungooensis É. G. Camus, l.c., 1913: 140; Gigantochloa wanet É. G. Camus, l.c., 1913: 141; Gigantochloa wunthoensis É. G. Camus, l.c.; Gigantochloa yunzalinensis É. G. Camus, l.c.

    • Thai names: ไผ่หกลำ (phai hok lam) (Northern); ไผ่ปอกลำ (phai pok lam) (Northern); วะเกลมะ (wa-kle-ma) (Karen); วะมะ (wa-ma) (Karen); วะเม (wa-me) (Karen). — T. Smitinand, 2001 [#1003]; BKF [#1368].

    • Distribution: THAILAND: not recorded from Thailand, but assumed to occur in the provinces of Tak and Kanchanaburi of western Thailand (Classification of Bamboo, 2012 [#1223]). — MYANMAR: Mon State. — INDIA (North-East).

    • Culm size: Height 6–10 m, diameter 10 cm.

    • Descriptions:

    • (1) Kurz, For. Fl. Burma 2, 1877: p. 557. (2) J. S. Gamble, Bambuseae Brit. India, 1896: p. 63 [#1230]. (3) K. K. Seethalakshmi & al., Bamboos of India, 1998: p. 159 [#1062].

    • (4) "… caespitose. Rhizomes short; pachymorph. Culms erect; 1000–1600 cm long; 6–10 mm diam.; woody. Culm-internodes terete; hollow; 40–80 cm long; dark green, or glaucous. Culm-nodes pubescent. Lateral branches dendroid. Culm-sheaths 12–20 cm long; 0.5 times as long as wide; hispid; with appressed hairs; with black hairs; hairy on margins; truncate at apex; auriculate; ciliate on shoulders. Culm-sheath ligule entire, or dentate. Culm-sheath blade ovate; narrower than sheath; pubescent; acute. Leaf-sheaths keeled; pubescent. Leaf-sheath oral hairs scanty; deciduous. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 15–40 cm long; 12–15 mm wide. Leaf-blade midrib evident. Leaf-blade venation with 10–26 secondary veins. Leaf-blade surface puberulous; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex antrorsely scabrous … Spikelets linear; laterally compressed; 25–50 mm long; 2.5 mm wide …" — Kew GrassBase [#1335].

    • Comments:

    • (1) There is some doubt if the line drawing of the culm sheath in J. S. Gamble, Bambuseae Brit. India, 1896, p. 63, pl. 54 [#1230], belongs to this species; cf. M. K. Alam, Notes on Taxonomy, Distribution and Conservation of Bamboo for Bangladesh, in: Proceedings 4th International Bamboo Workshop on Bamboo in Asia and the Pacific [#1050].

    • (2) See comments on Gigantochloa macrostachya by K. M. Wong, Bamboos of Peninsular Malaysia, 1995: p. 137, under "Gigantochloa rostrata" [#1210].