Swaziland's Alien Plants Database

Myriophyllum spicatum L.
HALORAGACEAE
Spiked water-milfoil
Unknown, Swaziland Status Unknown
Origin: N America, Europe, Asia & N Africa.
Growth Form: Aquatic herb
Plant Description: Plant: Rooted aquatic plant usually completely submerged except for the leafless flowering shoots; stems up to 3 m long; roots are few and small on the lower parts of the stems. Leaves: Olive-green, finely divided and arranged in whorls of 4–6. Flowers: Cream, small, 1.6–1.8 mm long, female and male, arranged in whorls on emergent spikes 50–100 mm long, late summer to early autumn (March–May). Fruit: Small nuts about 3 mm in diameter.
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