I am posting this on behalf of a friend who lives in Portugal (Zone 9). She has six Salvias, five of which vary only in colour. and would be grateful if anyone could identify her them. In her words :-

I would really just like to know which species they are. I'm sure the solitary one is different than the five, which look identical except for the colours. All flowers are about 2cm long. The leaves are totally different in size. The solitary one is "soft" and is about 110cm tall at the moment having been recently trimmed. The five are "woodier". The scent is different from the solitary one to the five, but both herbal, with the solitary one being stronger.

Here is the solitary one ...

... and the five which got severely damaged with the building works a couple of months ago but are now rallying around with a little TLC ...

... and the leaves, the five on the left, the solitary on the right ...

They flower year round here in continuous flushes, I believe.