Bambusa glabrovagina G. A. Fu

Culms 3–7 m, 1.5–4 cm in diam.; internodes 21–27 cm, initially thinly white powdery, glabrous; wall thick; branching to base. Branches 3 to several at each node, clustered, central 3 dominant; branchlets at lower nodes sometimes forming tough, curved thorns. Culm sheaths deciduous, glabrous, apex slightly inclined to outer side and asymmetrical, broadly convex or subtruncate; auricles unequal, linear-lanceolate or oblong, less than 3 mm wide, margin with curved setae; ligule ca. 1 mm, margin irregular, finely dentate; blade erect, ovate to ovate-lanceolate, base ca. 3/5 width of sheath apex, abaxially glabrous, adaxially slightly scabrid near base, apex acuminate. Leaf blade linear-lanceolate to lanceolate, 5–12 × 0.8–1.7 cm, abaxially densely pubescent, adaxially glabrous. Pseudospikelets several, clustered at each node, linear-lanceolate to lanceolate, 1.5–2 cm; prophylls ovate, 3–3.5 mm, 2-keeled; gemmiferous bracts 2 or 3, ovate-elliptic to ovate-oblong, 3–3.5 mm, apex obtuse to acute, very shortly mucronate; florets 6 or 7, middle 3 or 4 perfect; rachilla segments flat, 2–3 mm, apex inflated and cupular. Glumes absent; lemma ovate-oblong, 7.5–8 mm, glabrous, 9–11-veined, apex acute, mucronate; palea linear-lanceolate, slightly longer than lemma, 4-veined between and 2-veined on either side of keels, apex with a cluster of white hairs; lodicules 3, unequal; anterior oblique, ca. 2 mm, margins long ciliate; posterior subobovate, ca. 1.2 mm. Filaments slender; anthers ca. 4 mm. Ovary ovoid, ca. 0.4 mm, base with stalk ca. 1 mm, apex thickened and hispidulous; style ca. 0.2 mm; stigmas 3, ca. 0.8 mm. Mature caryopsis unknown.

* Low hills, around villages. Hainan (Dunchang).

Bambusa glabrovagina là một loài thực vật có hoa trong họ Hòa thảo. Loài này được G.A.Fu mô tả khoa học đầu tiên năm 1982.

光鞘石竹（学名：Bambusa glabrovagina）为禾本科簕竹属下的一个种。