af4532's picture

Plant with lilac flowers

Observed: 22nd August 2012 By: af4532
S159 Neighbourhood Nature - course complete
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Close-up
Lilac flower
Overview
Flowers and leaves
Several plants
Description:

Plant with lilac flowers growing at wayside in wood. Flowers can also grow at base of lower leaves.

Identifications
Species interactions

No interactions present.

Species with which Corn Mint (Mentha arvensis) interacts

Comments

lavateraguy's picture

which mint?

Corn mint, if I understand correctly, has a flowering shoot in which the apex is leafy, rather than flowering. It could be water mint (I don't think it looks quite right, but I can't say why) or one of the hybrids

af4532's picture

According to 'Wild Flowers of Britain...'

According to 'Wild Flowers of Britain and Ireland' (Blamey, Fitter, Fitter), water mint has the flowers 'round the terminal head' and corn mint has them 'all in whorls up the stem'.

Although their illustration of corn mint has no flowers at the top of the stem, they don't explicitly rule it out.

Also, this plant was observed beside a woodland path away from water.

So I would say Corn Mint is a better suggestion than Water Mint.

cicuta58's picture

Leaves

Some of the pictures clearly show a leafy apex to the inflorescence which supports M. arvensis as do the broadly triangular calyx teeth detectable in photo 4 which split it from various hybrids.

cicuta58