genus lycopersicon

NOUN
18 LETTERS · STARTS WITH G

genus lycopersicon is a valid 18-letter word worth 27 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
G2E1N1U1S1L1Y4C3O1P3E1R1S1I1C3O1N1
2 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 3 + 1 + 3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does genus lycopersicon mean?