Per Wikipedia, "Three subspecies are currently recognised:
S. spinulosa subsp. major has longer flowers than the other spe...Read Morecies.
S. spinulosa subsp. borealis has a shorter flower than S. spinulosa subsp. major, and a smaller fruit and is less hairy than S. spinulosa subsp. spinulosa.
S. spinulosa subsp. spinulosa has a shorter flower than S. spinulosa subsp. major, and larger fruit and more hair than S. spinulosa subsp. major."
Per Wikipedia, "Three subspecies are currently recognised:
S. spinulosa subsp. major has longer flowers than the other spe...Read More