柔叶隐棒花 rou ye yin bang hua

Leaves usually submerged, green to reddish brown, flaccid, 20-50 × 0.5-1.2 cm, somewhat undulate to almost smooth. Emergent leaves shorter and rather smooth compared to submerged ones. Spathe with a long tube (15-)20-30 cm; limb with a rather long, open spiral, usually grayish, mostly with shorter or longer purplish markings of varying intensities. Fl. Dec-Apr. 2n = 36.

Rivers, streams. Guangxi [Thailand, Vietnam].