水藁本 shui gao ben

Plants usually flowering and setting seed. Rootstock swollen at nodes or tuberous. Stems single or multicipital. Ultimate leaf segments irregularly serrate. Fruit ribs all narrowly winged, subequal. 2n = 22*.

Moist roadsides; 1500–1600 m. Hubei.

This taxon is used medicinally in Hubei as “shui gao ben,” a regional substitute for “gao ben.”