fern family

NOUN
11 LETTERS · STARTS WITH F

fern family is a valid 11-letter word worth 21 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4E1R1N1F4A1M3I1L1Y4
4 + 1 + 1 + 1 + 0 + 4 + 1 + 3 + 1 + 1 + 4 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does fern family mean?