Corm
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Corm, bulbo-tuber, or bulbotuber is a short, vertical, swollen underground plant stem that serves as a storage organ that some plants use to survive winter or other adverse conditions such as summer drought and heat (perennation).
Taro corms for sale in a Réunion market
Crocosmia corm with the tunic partly stripped to show its origin at the nodes on the corm cortex.
Crocosmia corm anatomy, showing tunic, cortex of storage tissue, central medulla, and emergence of a new corm from a bud near the top.
Crocosmia corm with stolons emerging through the tunic. The stolons originate at the axillary buds of the corm scales, and generally produce new corms at their tips
Tuber
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Tubers are a type of enlarged structure used as storage organs for nutrients in some plants, derived from stems or roots. Tubers help plants perennate, provide energy and nutrients, and are a means of asexual reproduction.
Ulluku (Ullucus tuberosus) tubers
Flowers and tuber of Anredera cordifolia
A young potato tuber
Freshly dug sweet potato plants with tubers