The two crossword solutions for the term 'Tree or Shrub' are ACACIA (6 letters) and SUMAC (5 letters). ACACIA is a genus of shrubs and trees belonging to the subfamily Mimosoideae of the family Fabaceae, native to Africa, Madagascar, and Australasia. SUMAC is a shrub or small tree in the genus Rhus, which is part of the family Anacardiaceae. It is native to temperate regions of the Middle East, Africa, and North America.