scale bar = 1cm.
*Parrot's Feather - a weed (*Myriophyllum aquaticum).
Other names *Myriophyllum brasiliense.
Family: Haloragaceae (Raspwort family).
Native of South America.
Occurrence: Parrot’s Feather grows in creeks and shallow
water. It has potential to be a serious pest in local waterways.
- it grows in water with stems up to 2 metres long
- leaves are in groups of four to six leaves, growing in a ring around the stems
- the leaves growing above the water are divided into comblike teeth
- the leaves are green to blue
- the flowers are inconspicuous.
Parrot’s Feather is an introduced Water Milfoil. It is a troublesome weed of water channels
and creeks. It spreads vegetatively from broken stem fragments, so that careless weeding may help
spread the plant.
Similar species: There are some common native Water Milfoils. The natives differ from Parrot’s
Feather in that
- the leaves may not grow in rings around the stems, or
- only the submerged or emerged leaves are in rings around the stem, or
- the leaves are not toothed like a comb, or
- the leaves are green or reddish, and not bluish.
Photo 1: Leaves of Parrot’s Feather.
2: Emergent leaves.
3: A dense growth of Parrot’s Feather. All photos: Campbells Creek.