Vegetative key to the families
Vegetative Key Vegetative key to the families
Either: leaves whorled; or leaves opposite and interpetiolar stipules present (Fig. 29). Herbs and woody plants
Leaves whorled, or stipules as large as leaves giving the appearance of 6–8 whorled leaves
Herbs
Stems not quadrangular. Leaves thick, broad, fleshy (Peperomia) Piperaceae
Stems angular, usually quadrangular, leaves narrow