STEMMATA is a playable word

stemma Scrabble® Dictionary

noun
pl. stemmas or stemmata
a scroll recording the genealogy of a family in ancient Rome
96 Playable Words can be made from "STEMMATA"
   2-Letter Words (13 found)
   3-Letter Words (26 found)
   6-Letter Words (3 found)
   8-Letter Words (1 found)