Geophytes is an inclusive term for species that produce a modified underground structure used to store food and adapted to survive periods of harsh environmental conditions.
The two principal climatic yearly cycles for which they are adapted are the warm-cold cycle found in temperate areas, and the wet-dry cycle found in Mediterranean, tropical and subtropical environments.
Geophytes include bulbs, corms, tubers, tuberous roots, tuberous stems, rhizomes and pseudobulbs.
|Bulb||A short modified stem enclosed in fleshy leaves (scales) modified for food storage.||
|Corm||Underground modified stem with compacted nodes with lateral buds and a papery covering.||
|Tuber||Swollen underground stem modified for food storage. Similar to a corm but lacks papery covering.||
|Tuberous stem||Flattened swollen stem made by enlargement of the hypocotyl. A perennial structure.||
|Tuberous root||Enlarged fleshy root with shoots produced at one end and roots at the other.||
|Rhizome||Specialized storage stem that grows horizontally at or just below the soil surface.||
|Pseudobulb||Above-ground, enlarged stem found in orchids.||Cymbidium|