Question

what resemblance does he find between the stars and daffodils

Answer 1

He finds that the never ending line of the daffodils is similar to the uncountable stars in the galaxy.

Answer 2

Hi here is your answer
He founds that daffodils were like a star because the daffodils were in more number than ten thousand as far as his eyes can see the daffodils
as if daffodils were a star that shine