Vegetative key to the families

Remaining groups
Plants not climbing
Herbs with leaves with parallel venation; the leaves sometimes reduced to scales on a rhizome, often with a sheath and a blade (the blade penniveined in Canna). Terrestrial or amphibious. Many monocotyledons, a few dicotyledons
Leaves borne on aerial stems, separated on the stem by distinct internodes
Leaves mainly basal or the leaf solitary, arising from a rhizome or underground upright stem or clustered at the base of upright aerial stems