Pachycauls are plants with a disproportionately thick trunk for their height, and few branches. This can be the product of exceptional primary growth (as with palms and cycads) or disproportioate secondary growth as with Adansonia. The word is derived from the Greek pachy- meaning thick or stout, and Latin caulis meaning the stem. All of the tree (and treelike) species of cactus are pachycauls, as are most palms, Cycads and pandans. The most extreme pachycauls are the floodplains, or riverbottom variety of the African Palmyra (Borassus aethiopum) with primary growth up to seven feet (2.1 meters) in thickness, and the Coquito Palm (Jubaea chilensis) with primary growth up to six feet (1.8 meters) thick. The most pachycaulous cycad is Cycas thouarsii at up to five feet (150 centimeters) in d