> The root of the Sanskrit verb should ascend to a P.I.E.
> *melH- or *merH-, if of Indo-European origin,
Pokorny suggests the Greek morphe: is from the root 2 mer- "shimmer,
sparkle" + the suffix -bha-.
He doesn't mention the Sanskrit murti-.
Interestingly, I was taught (way back then) that the Latin forma was from
the Greek morphe with metathesis. Seems a bit unlikely to me!