On 2009-05-13 16:08:32 +0100, Pam Moore said:

On Wed, 13 May 2009 13:57:15 +0100, Stewart Robert Hinsley
wrote:

http://i665.photobucket.com/albums/vv14/pousser/6.jpg
A lot of patches of this on old walls. Tiny little flower.

Ivy-leaved toadflax aka Kenilworth ivy (Cymbalaria muralis)

Interesting that we've had two "common" or local names for what I've
only ever known as ivy-leaved-toadflax; Keniworth ivy (SRH sbove) and
snapdragon (Sacha). The latter name I've only known applied to the
ordinary "bedding" antirrhinum. Here's where Latin names come into
their own.

Don't get rid of it unless what you prefer is bare walls. It's an
attractive little plant.

Pam in Bristol

I'd add Erigeron karvinskianus to give it company. ;-)
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Sacha
www.hillhousenursery.com
Exotic plants, shrubs & perennials
South Devon