Samara (fruit)
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vine maple (Acer circinatum)
samara of Combretum zeyheri
Seeds of the tropical ash (Fraxinus uhdei)
A samara is an achene, a type of dry winged botanical fruit.[1] The shape of a samara enables the wind to carry the seed farther away than regular seeds from the parent tree:[2]
- The seed can be in the centre of the wing, like the elms and the hoptree.[3][4]
- The seed can be on one side, with the wing extending to the other side, making the seed self rotate it falls.[5]
Samara (fruit) Media
Unusual group of three samaras of sycamore maple (Acer pseudoplatanus. Normally, they are in pairs.)
The hoptree (Ptelea trifoliata)
The Siberian elm (Ulmus pumila)
References
- ↑ botanical fruit = seed with covering tissue, but not a fruit in ordinary speech.
- ↑ Fergus, Charles. Trees of Pennsylvania and the Northeast (2002)Stackpole Books. ISBN 9780811720922.
- ↑ Catalogues of Plants: no. 1. Arthur J.C; Coulter J.M. and Barnes C.R. 1881. Catalogue of the phaenogamous and vascular cryptogamous plants of Indiana..
- ↑ Transactions of the Royal Scottish Arboricultural Society (1881)Douglas & Foulis.
- ↑ Alexander, David E.. Nature's Flyers: Birds, Insects, and the Biomechanics of Flight (2004)JHU Press. ISBN 9780801880599.
Further reading
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- Ralph Lorenz 2006. Spinning flight: dynamics of frisbees, boomerangs, samaras and skipping stones, , Copernicus New York. ISBN 0-387-30779-6