Which is in the grass family, Pachypodium or Arrhenatherum?
Pachypodium Pachypodium is a genus of succulent spine-bearing trees and shrubs, native to Madagascar and Africa. It belongs to the dogbane family, Apocynaceae. "Pachypodium" comes from a Latin form from Greek "pachus" (thick) and "podion" (foot) (or Gk podos, root form of pous, foot), hence meaning "thick-footed".
Taxonomy of Pachypodium The taxonomy of the "Pachypodium genus" is the study of the species and subspecies in the genus "Pachypodium". There are currently 25 recognized species in the genus, of which 17 are shrubs and eight are trees.