Source : Webster's Revised Unabridged Dictionary (1913)

Phytelephas \Phy*tel"e*phas\, n. [NL., fr. Gr. ? a plant + ? the
   elephant; also, ivory.] (Bot.)
   A genus of South American palm trees, the seeds of which
   furnish the substance called vegetable ivory.

Source : WordNet®

Phytelephas
     n : small genus of South American feather palms [syn: {genus
         Phytelephas}]