Teline nervosaSeen growing in the greenhouse in the Royal Botanic Garden, Madrid in April 2018. I have not been able to find any information about this plant except that the notice states that it comes from the Canary Islands
I was surprised to find Teline mentioned in THE MEDITERRANEAN GARDEN, not this one but Teline nevertheless,
THE MEDITERRANEAN GARDEN number 57 July 2009
PLANTS NAMED FOR MONTPELLIER by Didier Morisot
What’s more there are photographs of some of the plants mentioned in the article here including a Teline
http://www.mediterraneangardensocietyarchive.org/57-montpelier.html