Pachycauls

 Pachycauls are plants with a disproportionately thick trunk for their height, and few branches. In contrast, trees with thin twigs such as Oak (Quercus), Maple (Acer) and Eucalyptus are called leptocauls while those with moderately thick twigs like Plumeria are called mesocauls. Pachycauly can be the product of exceptional primary growth (as with palms and cycads) or disproportionate secondary growth as with the Baobabs (Adansonia). The word is derived from the Greek pachy- meaning thick or stout, and Latin caulis meaning the stem.