grass tree

Short definition from Wiktionary

Noun

1. 1
   Any of various small trees of the family Xanthorrhoeaceae (especially of the genus Xanthorrhoea), having a thick trunk crowned with a dense tuft of pendulous, grass-like leaves.
2. 2
   A New Zealand shrub of the genus Dracophyllum, that grows up to 12 m high and found throughout in drier climates and at higher altitudes, with slender erect or spreading branches. Rigid, leathery grass-like leaves are usually crowded towards the tip of the branchlets. Also called spiderwood.
3. 3
   Dasylirion longissimum (family Asparagaceae, Mexican grass tree)
4. 4
   Dracophyllum (family Ericaceae), a genus of about 100 species.
5. 5
   Richea pandanifolia (family Ericaceae, giant grass tree).