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FOC | Family List | FOC Vol. 22 | Poaceae | Sinobambusa

1. Sinobambusa tootsik (Makino) Makino, J. Jap. Bot. 2: 8. 1918.

唐竹 tang zhu

Culms 5–12 m, 2–6 cm in diam.; internodes initially deep green, flattened above branches, 30–40(–80) cm, glaucous, glabrous, apically minutely papillate. Culm sheaths initially red-brown, basally suboblong, leathery, slightly glaucous, setose, densely so at base, margins ciliate, apex broadly rounded; auricles very variable, scabrid, tomentose; oral setae curved, ca. 2 cm; ligule arcuate, ca. 4 mm, uniform; blade reflexed, green, lanceolate. Leaves 3–6(–9) per ultimate branch; sheath glabrous; auricles obscure; oral setae deciduous, radiate, ca. 1.5 cm, undulate; ligule truncate or subrounded; blade 6–22 × 1–3.5 cm, secondary veins 4–8-paired, margins serrulate. Spikelets 1–3(–5), lateral spikelets sessile, terminal spikelet on 2–11 mm pedicel, linear, 8–20 × 0.2–0.3 cm; florets 7–12 mm, glabrous. Lemma ovate, ca. 7 mm wide, margins ciliate, apex acute; palea elliptic; lodicules nearly rhombic, elliptic or ovate, ca. 2.5 mm, ciliolate. Anthers light yellow. Ovary glabrous; style 1, extremely short; stigmas 3, 3–4 mm. New shoots Apr–May.

Fujian, Guangdong, Guangxi [N Vietnam; introduced in Japan].

1 Leaf blade abaxially pubescent   (2)
+ Leaf blade abaxially glabrous   (3)
2 (1) Culm sheath ligule arcuate, 3–4 mm; blade green; lodicule 7–9-veined. POACEAE Tribe   1a var. tootsik
+ Culm sheath ligule truncate, short; blade purple or purple-green; lodicule few veined.   1b var. laeta
3 (1) Apex of culm sheath ligule entire.   1c var. maeshimana
+ Apex of culm sheath ligule sharply toothed or 2-toothed.   1d var. dentata


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