Pachycaul

[2] All of the arboreum (treelike) species of Cactaceae are pachycauls, as are most of the Arecaceae, Cycadaceae and Pandanus.

The most extreme pachycauls are the floodplains, or river-bottom, varieties of the African palmyra (Borassus aethiopum), with primary growth up to seven feet (2.1 meters) in thickness,[3][4][5] and the Coquito palm (Jubaea chilensis), with its primary growth measuring up to six feet (1.8 meters) thick.

[9] The tallest pachycaul is the Andean wax palm (Ceroxylon quindiuense), at heights of up to 220 feet (67 meters).

The most pachycaulous cactus are the barrel cacti (Echinocactus platyacanthus), with primary growth up to 4 ft 4 in (1.32 meters) in diameter.

[11] The largest caudiciforme-type pachycaul is the African baobab (Adansonia digitata); one specimen of which, called the Glencoe baobab (from Hoedspruit, Limpopo, South Africa) has a basal diameter (not girth) of 52 ft 2 in (15.90 meters).