THYRSOSTACHYS is a genus of moderate size. Tropical, clumping bamboo with rather small leaves and persistent culm sheaths.
| Genus species | Max Height | Max Diameter | Minimum Temperature | Comments/Description |
| T.siamensis | 40′ | 3″ | 25F | One of the most graceful bamboos known. Culm walls very thick, almost solid. Sheath persistent. Culms used for umbrella handles. |
| T.oliveri | 60′ | 6″ | 25F | A large tufted elegant bamboo. Culms straight bright green with whitish silky surface when young, dull green or yellowish on maturity. |
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