These look like Calendula of some kind? Orange yellow flowers around 1.5cm across with a dark middle. Growing in a mass outside an abandoned dwelling but sparse elsewhere. Growing on south west Tenerife on scrubland about 600m above sea level. Thanks.
AnnaKeightley Bolton, United Kingdom Jan 18, 2013
Thank you. Narrowed it down to Calendula arvensis L. subsp bicolor, hopefully.