Key to species of Yushania sect. Brevipaniculatae in Guizhou

1 Culms 3 to 5 m ...................................................................................................................................................................................2

- Culms 0.7 to 2 m ................................................................................................................................................................................3

2 Sheath scars of the culm glabrous; culm sheath deciduous, longer than internodes, blade reflexed; new shoots in April.................. ....................................................................................................................................................................................... Y. complanata

- Sheath scars of the culm initially with setose; culm sheath tardily deciduous, shorter than internodes, blade reflexed or erect; new shoots in June .............................................................................................................................................................. Y. weiningensis

3 Culm leaf sheath 1/3 to 1/2 as long as internodes .................................................................................................... Y. shuichengensis

- Culm leaf sheath 2/3 to 4/5 or nearly as long as internodes...............................................................................................................4

4. Culm internodes setose; culm leaves tardily deciduous, oral setae 4–6, new shoots in September............................ Y. panxianensis

- Culm internodes smooth; culm leaves deciduous, oral setae absent, new shoots in June to July.................................. Y. tongziensis