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 mainly basal or the leaf solitary, arising from a rhizome or underground upright stem or clustered at the base of upright aerial stems

Corms, bulbs and tubers absent; rhizomes present or the stems short and erect

Leaves (or green aerial stems) with transverse partitions, hollow, terete

Partitions in leaves or green aerial stems absent