Umbel
Template:Short description Template:Sister project In botany, an umbel is an inflorescence that consists of a number of short flower stalks (called pedicels) that spread from a common point, somewhat like umbrella ribs. The word was coined in botanical usage in the 1590s, from Latin umbella "parasol, sunshade".[1] The arrangement can vary from being flat-topped to almost spherical. Umbels can be simple or compound. The secondary umbels of compound umbels are known as umbellules[2] or umbellets.[3] A small umbel is called an umbellule.[3] The arrangement of the inflorescence in umbels is referred to as umbellate, or occasionally subumbellate (almost umbellate).
Umbels are a characteristic of plants such as carrot, parsley, dill, and fennel in the family Apiaceae; ivy, Aralia and Fatsia in the family Araliaceae; and onion (Allium) in the family Alliaceae.
An umbel is a type of indeterminate inflorescence.[3][4] A compressed cyme, which is a determinate inflorescence, is called umbelliform if it resembles an umbel.
Gallery
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Compound umbel of a hemlock-parsley, Conioselinum pacificum (Apiaceae)
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Compound umbel of a wild carrot, Daucus carota (Apiaceae)
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Simple umbel of Fatsia japonica (Araliaceae)
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Involucrate simple umbels of Primula veris
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Umbel of a Pelargonium zonale
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Daucus carota umbel down view
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References
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- ↑ umbel etymology
- ↑ Template:EFloras
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Further reading
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