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Displaying 1 - 14 out of 14 Object(s)
Term Definition
Bulb A short, underground stem covered by enlarged and fleshy leaf bases, e.g., an onion. A bulb and bulblet. Drawing by B. Angell.
Bulblet A small, short, more-or-less underground stem covered by enlarged and fleshy leaf bases which arises from a bulb, a bublet may eventially grow into a bulb; a bulblike, above ground structure, usually in leaf axils or sometimes in inflorescences. A bulb and bulblet. Drawing by B. Angell.
Caudex A short, vertical, usually woody and persistent stem at or just below the surface of the ground. A bulb and bulblet. Drawing by B. Angell.
Contractile roots Referring to a root that elongates and then contracts, usually to keep a bulb, corm, or rhizome at a certain level in the ground. Contractile roots. Photo by C. A. Gracie.
Corm A fleshy below ground storage organ derived from the base of the stem. A comparison of underground parts. Drawing by B. Angell.
Cormlets Small corm that are produced at the base of a corm. Corms and cormlets. Drawing by B. Angell.
Diffuse roots A root system that consists of many more-or-less branches of equal sizes, i.e., there is no taproot. Diffuse roots. Photo by C. A. Gracie.
Fibrous roots A root system characteristic of monocots in which all of the branches are approximately equal in diameter. Compare with taproot. Diffuse roots. Photo by C. A. Gracie.
Proteoid roots In the Proteaceae, small, lateral roots of limited growth that form dense clusters on “ordinary” roots. Diffuse roots. Photo by C. A. Gracie.
Rhizome A prostrate stem below the ground that sends off rootlets and vertical stems or leaves; in the Poaceae, lateral underground stems that collectively constitute a “sod” from which leafy stems emerge. A rhizome. Drawing by B. Angell.
Taproot A large primary root, markedly larger than other roots arising from it, that may persist in adult plants and is characteristic of dicots. Compare with fibrous roots. Seedlings of a Sapotaceae. Photo by S. A. Mori.
Tuber An underground, swollen part of a stem or a root that functions in food storage. A comparison of underground parts. Drawing by B. Angell.
Tunic (tunicate) The outer, dry and papery covering of a bulb or corm (possessing a tunic). A comparison of underground parts. Drawing by B. Angell.
Xylopodium (plural = xylopodia) An underground, woody, storage organ derived from stems or roots and common in cerrado vegetation. Xylopodium of Anacardium corymbosum. Photo by S. A. Mori.