Richard, editor of the book “Flowers and their messages”, the first book published by the ashram on spiritual significance of flowers, speaks on this very subject. Recorded in 1990.
More about Richard can be found HERE , while several of his talks and essays can be found at this website HERE
Here is the description of those that are not purely human, but whose origin is far higher, far greater, and their existence much longer than the existence of the earth.
About Savitri | B1C3-01 Aswapati – a Divine Representative (pp.22-23)