3. Oligostachyum hupehense (J. L. Lu) Z. P. Wang & G. H. Ye, J. Nanjing Univ., Nat. Sci. Ed. 24(1): 164. 1988.
凤竹 feng zhu
Pleioblastus hupehensis J. L. Lu, J. Henan Agric. Coll. 1981(2): 73. 1981; Arundinaria hupehensis (J. L. Lu) C. S. Chao & G. Y. Yang; Sinobambusa acutiligulata W. T. Lin.
Culms ca. 5.5 m, 1–2.5 cm in diam.; internodes green-purple, to 23 cm, initially retrorsely white setulose; wall ca. 3 mm thick; nodes elevated, supra-nodal ridge more prominent than sheath scar; sheath scar with persistent base of sheath and deciduous ring of hairs. Culm sheaths deciduous, purple-green when fresh, pale brown when dry, papery, strigose, densely retrorsely puberulent at base, margins brown ciliate; auricles and oral setae absent; ligule pale brown, arcuate, abaxially hispidulous, white ciliolate; blade deciduous with articulate base, erect, narrowly triangular to linear-lanceolate, both surfaces pubescent especially toward base, margins brown ciliate. Leaves 1–3 per ultimate branch; sheath pubescent especially on upper part; ligule 1–3 mm, puberulent; blade oblong-lanceolate, 6–15 × 0.6–1.6 cm, glabrous or abaxially pilose at base of midvein. Racemes with 2 or 3(–5) spikelets; peduncle and sometimes lower branches enclosed by sheathlike bracts; pedicel slender, pubescent, subtended by a subulate bract. Spikelets 1.4–3.5 cm; florets 3–7; rachilla internodes ca. 4 mm, ciliate. Glumes 2 or 3, 1st small, 7–9-veined, 2nd and 3rd resembling lemma; lemma ca. 1.2 cm, scabrid, white pubescent, upper margins ciliate; palea ca. 4 mm, keels sparsely ciliate, apex obtuse or arcuate, sometimes emarginate; lodicules 3, several veined, margin ciliolate, posterior one smaller. Stigmas 3. New shoots late Apr, fl. early Apr.