生活型

herb

形態特徵

• Stems much branched, glabrous or sparsely spinulose.
• Leaves flat, obtuse, serrate, adaxial surface usually spinulose, 2-4 cm long, to 3 cm wide, sheath without auricles.
• Pistillate flowers solitary, without spathe; stigmas 2 or 3.
• Seeds slightly asymmetrical, ellipsoid to ovoid.

分布

• 台灣 : in ponds in the south.
• 世界 : Cosmopolitan.

引證標本

KAOHSIUNG: Chenchinghu, Yang 39.

參考文獻

• YANG, Yuen-Po. 2000. Flora of Taiwan, second edition 5: 33. (Fl. Taiwan 2nd edit.)