单枝竹属 dan zhi zhu shu

Authors: Nianhe Xia & Chris Stapleton

Monocladus L. C. Chia et al.

Clump-forming scrambling bamboos, small to medium sized. Rhizomes short necked, pachymorph. Culms solid or nearly so; nodes slightly prominent. Branches solitary, nearly as thick as culms. Culm sheaths persistent, leathery; auricles subfalcate to broadly falcate, large; ligule short; blade erect. Leaf blade lanceolate to linear-lanceolate, usually large, base truncate; venation not tessellate. Inflorescence iterauctant, fully bracteate, arising from axil of persistent spathiform bracts; prophylls 2-keeled, gemmiferous, inserted at point of branching, closely followed by 2 or 3 closely spaced, gemmiferous bracts. Pseudospikelets 3–9-flowered, uppermost floret imperfect; first fertile lemma separated from gemmiferous bracts by rachilla segment to 1 cm. Rachilla disarticulating between florets, internodes to 1 cm. Lemma subleathery; palea of lowest floret slightly longer than lemma, subleathery; palea of other florets much shorter than lemma, membranous; lodicules 3, glabrous. Stamens 6; filaments free. Ovary glabrous; style very short; stigmas 3, plumose. Caryopsis terete, glabrous.

Five species: S China, Vietnam; four species (all endemic) in China.

Lower Taxa

• Bonia amplexicaulis (L. C. Chia et al.) N. H. Xia
• Bonia levigata (L. C. Chia et al.) N. H. Xia
• Bonia parvifloscula (W. T. Lin) N. H. Xia
• Bonia saxatilis (L. C. Chia et al.) N. H. Xia
• Bonia saxatilis var. saxatilis
• Bonia saxatilis var. solida (C. D. Chu & C. S. Chao) D. Z. Li