Invasive Alien Species

Species Name: Enydra fluctuans

Family Name:
Enydra linifolia Sch.-Bip.
E.longifolia (Blume)DC.
Tetractis paludosa Reinw.
An erect or prostrate, aromatic herb, up to 100 cm tall. Stem cylindrical, hollow, rather thick, reddish to purplish near the lower nodes. Leaves opposite, sessile, oblong-lanceolate-linear, bright green, 2-10 x 0.3-1.7 cm. Inflorescence terminal or pseudo-axillary, head flowers sessile; involucral bracts 4 with longitudinal-vein, the outer 2 ovate obtuse, the 2 inner ones shorter and much narrower; ray flowers in many whorls, female, tube long, slender; limb 2-5 lobed, broad; disk flowers bisexual, not numerous, actinomorphic, corolla with slender tube, bell shaped, rim 5-lobed. Achenes (often not developing) closely clasped by the somewhat thickened palea, elongate, longitudinally striped and transversely wrinkled, no pappus. The name is often misspelled as “Enhydra
Invaded Habitat:
Along ditch, watercourses, margin of the fish ponds, swampy localities, rice fields
Java, Sumatra, Kalimantan  and Sulawesi
Sunny and marshy areas up to 1 800 m altitude
  1. Backer , C. A. & R. C. Bakhuizen Van Den Brink.  1965.  Flora of Java Vol.   N.V. P. Noordhoff. Groningen, Netherlands.
  2. Soerjani, M.,  A. J. G. H. Kostermans & Gembong Tjitrosoepomo (Eds.).  1987.  Weeds of Rice in Indonesia. Balai Pustaka. Jakarta