8. Oligostachyum sulcatum Z. P. Wang & G. H. Ye, J. Nanjing Univ., Nat. Sci. Ed. 1982(1): 96. 1982.
少穗竹 shao sui zhu
Sinobambusa parvifolia T. H. Wen & S. Y. Chen, J. Bamboo Res. 6(3): 31. 1987; Arundinaria sulcata (Z. P. Wang & G. H. Ye) C. S. Chao & G. Y. Yang.
Culms to 12 m, ca. 6.2 cm in diam.; internodes initially purple-green, to 37.5 cm, initially white powdery, basally or completely grooved above branches; nodes weakly developed, supra-nodal ridge slightly more prominent than sheath scar. Culm sheaths yellow-green, glabrous, white powdery and densely brown strigose, especially densely so at base, margins ciliate in lower culm; auricles and oral setae absent; ligule ca. 3.5 mm, convex at middle, glabrous, ciliate; blade erect or spreading, purple-green, triangular-ovate to linear-lanceolate, proximally contracted. Leaves 2 or 3 per ultimate branch; sheath entirely glabrous; auricles and oral setae absent; ligule arcuate, 1–1.5 mm, ciliolate; blade linear-lanceolate, 9–16 × 0.9–1.5 cm. Racemes consisting of 2 or 3(–6) spikelets; peduncle slender, basally enclosed by sheathlike bracts, axis slender, glabrous; pedicels 1–1.5 cm, slender, glabrous. Spikelets lanceolate to linear-lanceolate, 15–37 × 1.5–3 mm; florets 3–7. Rachilla internodes 4–5 mm, flattened on side facing floret, sparsely ciliolate along margins. Glumes usually 2, first small with inconspicuous veins, second 7–10 mm, 7-veined; lemma 1.1–1.3 cm, scabrous, 9–15-veined, adaxially transverse veins distinct, apex acuminate; palea 7–10 mm, keels ciliate, apex obtuse; lodicules 3, several veined, ciliate. Stamens 3 or 4. Style 1; stigmas 3, plumose. New shoots May, fl. Apr–May.
* Forests; ca. 800 m. Fujian; cultivated in Zhejiang.