Dark blue snakeweed
Stachytarpheta cayennensis
family
Verbenaceae
origin
Exotic
declaration
Council Pest Vegetation (BCC Natural Asset Local Law)
Council Pest Vegetation (BCC Natural Asset Local Law)
Common names
Dark blue snakeweed, Blue porter weed, Blue rat's tail, Blue snake-weed, Bluetop, Rattail, Cayenne snakeweed, False verbena, Nettleleaf velvetberry, Nettleleaf vervain.
A small, long-lived, shrub with a woody rootstock that grows 1-2.5 m tall. Its stems are four-angled when young and its leaves are oppositely arranged. Its stems and leaves are mostly hairless and its leaves have a wrinkled texture and sharply toothed marginsits dark blue, purple, or violet flowers are arranged on long, curved, slender spikes at the top of the branches. These flowers are tubular in shape with five broad petal lobes (about 5 mm across).
Impact
Impact
Dark blue snakeweed (Stachytarpheta cayennensis) is regarded as an environmental weed in the Northern Territory, Queensland and Western Australia.
Location
Location
Characteristics
Characteristics
Similar Species
Similar Species
Dark blue snakeweed (Stachytarpheta cayennensis) is regarded as an environmental weed in the Northern Territory, Queensland and Western Australia.
