Illustrated Guide to
of New Zealand
Weeds of New Zealand
by Ian Popay, Paul Champion & Trevor James
ISBN 0 473 09760 5
by kind permission of the
Zealand Plant Protection Society
Publication or other use of images or descriptive
text on these pages is unauthorised unless written permission is
obtained from the authors and publisher.
of the publication Common Weeds of New Zealand must always
Available from Touchwood
Trailing or straggling
herb or shrub, with shining leaves, purple underneath. Flowers white,
with purple dots inside the lower lip. Spreads vegetatively by runners.
Commonly grown in houses and gardens.
- Flowers Inflorescence
raceme-like, up to 30 cm long, sometimes with short branches near
the base. Corolla tube white, about 1 cm long, with two-lobed
upper lip and purple dots inside the lower lip. Flowers Dec-Aug.
- Fruit Dark
brown nutlets about 1.5 mm in diameter.
- Leaves In
opposite pairs, shining, purple underneath, dotted with glands,
hairy especially on veins, 5-12 cm long by 3.5-7 cm wide. Leaf
stalks 20-35 mm long.
- Stems Trailing
or straggling, covered in purple hairs.
- Roots Spreads
vegetatively by runners.
Shady areas in and
around forest margins, plantations and hedges.
Locally abundant in
NI. In SI, only found around Karamea (Buller). Originally from
eastern South Africa.
as a trailing pot plant, and still widely grown in gardens and
houses. Listed on the National Pest
Plant Accord (see Introduction for details).
and similar species
A close relative of
plectranthus, Plectranthus ecklonii (blue spur flower),
is widely grown in NZ, but is rarely found growing wild. It is
also subject to Pest Plant Management Strategies in several regions
of NZ. Details are available from individual regional councils
or unitary authorities. Wood sage (Teucrium scorodonia)
is another hairy, rhizomatous labiate found on forest margins,
scrub and plantations, lacking purple-coloured foliage, flowers
green with purple stamens on a terminal spike, scattered throughout,
only common in northern SI.
of botanical name
= spurred flower; ciliatus (Lat.) = hairy.