Form & Size: An erect, much-branched perennial
shrub 0.5 to 2m in height, with finely hairy stems.
Distribution: Widely distributed throughout tropical and sub-tropical areas of
Australia and also world wide in similar climatic areas.
Leaves: Alternate, long and narrow, elliptic, almost stalkless, pointed tip, lightly
to densely hairy, 3.5-11cm x 0.5- 2.5 cm.
Flowers: Yellow, 4-petalled to 2.5 cm diameter, having a tubular floral tube which is
Flowering Period: Generally March to August but depending on wet season.
Fruit: Narrow, cylindrical capsules 2-4 cm x 0.3-0.4 cm containing numerous roundish
Notes: An aquatic or semi-aquatic herb or shrub which inhabits swamps, billabongs
etc., particularly in prolific wet periods. It has some toxic properties, sometimes causing gastro-enteritis
in sheep and cattle.