Abstract: There was no description or record for the reproductive organs of Bambusa multiplex(Lour.) Raeuschel ex J. A. et J. H. Schult. var. incana B. M. Yang in the “Chinese Flora”［Tomus 9(1)］,《Flora of China》and other related literature. In this paper, the author gathered and manufactured its reproductive organ specimen and described it both in English and in Chinese. Its main features were: the flowering branch 50-160 cm; pseudo spikelets solitary or several clustered at nodes of flowering branches; florets 5-8, rachilla segments flat, 3-4 mm, glabrous; glumes absent; lemma asymmetrical, oblong-lanceolate, glabrous;palea linear; filaments 0.5-1.2 cm; anthers purple; ovary ovoid; stigmas 3 or variable in number, feathery; lodicules 3; stamens 6. Flowering March-April. Mature caryopsis is thin narrow ovale, brown, ca. 0.8-1.0 cm, dia. 2.0-2.5 cm, peel thicker.The specimen was collected from Xiamen Botanical Garden.

Key words: Bambusoideae Nees, Bambusa Retz.corr.Schreber, B.multiplex（Lour.）Raeuschel ex J.A.et J.H.Schult.var.incana B.M.Yang, reproductive organ, description