Strictly correct plurals of flower names

Geoffrey K. Pullum on Language Log. Click through for his list of ’30 count nouns naming flowers, together with their approved grammatically correct plurals’, then read his pay-off:

Don’t be bullied by prescriptivist or purist nitwits who imagine that status can be achieved by learning the formation of Latin and Greek plurals. Look at ordinary practice in order to decide what is probably correct English, and accept that there may be variation within Standard English morphology. (But do get phenomena right: it’s the plural of phenomenon. One must have some standards. You will not be invited to the right literary lunches if you say It was a strange phenomena.)