Azed

[JJ109]

19d Old treatment for sore throat? Ring about course one's following (8)
_ R _ N _ _ _ A

Just got 5 left to solve but they all intersect, so I am hoping this one will lead me to the others remaining. many thanks in advance.

[Spoffy]

BELL ('Ring') around RUN ('course'), with A ('one') following.

[JJ109]

Thanks Brunella (plant) I presume
Fingers crossed this helps with the rest
Best wishes

[Spoffy]

Yes, also known as 'prunella' or 'selfheal'. Apparently the flowers resemble mouths with swollen throat glands, the 'signature' which originally led to its use for treating throat complaints.

Good luck with the others!

[JJ109]

Thanks again

[depresion]

Totally stuck on 36a - Bright blue mineral I spotted in spur ahead, rocky (10, 3 words, apostrophe). Has to be an anagram but I can't work it out and none of the sites I've visited seem to help. Thanks.

[roslyn251254]

yes anagram of i spur ahead... i found it with chambers word wizard...do you know it?

[depresion]

Found it! Thank you!