Marrubium alysson Levant Horehound
The grey felted leaves and small flowers with large calyx teeth larger than the petals characterise this plant. One book I have says the flowers are red but all photos tend to show them exactly the same colour as this one.
Marrubium alysson is found in Spain, Sardinia, Italy and north Africa.
Roadside, Cabo de gata Spain, 20th March 2007
Added on 18th December 2010, updated 1st March 2012