물상추-[정명] Pistia stratiotes L.

물상추

 

 

과명	Araceae (천남성과)	속명	Pistia (피스티아속)
전체학명	[정명]Pistia stratiotes L.	추천명	물상추
이명		외국명	Water,Water lettuce,Shell flower,Lettuce Water

 

 

Waterlettuce is a perennial herb in the aroid family (Araceae). The plant consists of free-floating rosettes of many leaves. The rosettes occur singly or connected by short stolons. Leaves are gray-green, densely pubescent, and wedge shaped (obovate-cuneate). They have conspicuous parallel veins, frequently have thick spongy parenchymous tissue at the base, and vary from being slightly broader (at apex) than long to much longer than broad. Leaves range from 2 to 35 cm long. Roots are numerous and feathery. The inflorescences are inconspicuous pale-green spathes near the center of the rosette. Each spathe is constricted near the middle, with a whorl of male flowers above and a single female flower below the constriction. Fruits are many-seeded green berries, and the mature seed coat is thick, golden-brown, and wrinkled.