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Corkscrew shaped seed digs itself into the soil

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Corkscrew shaped seed digs itself into the soil

B
borriss

12 Views • Dec 13, 2014

Description

Erodium cicutarium (stork's bill, filaree) - the spiral shape of the awn changes during daily changes in humidity: wetness causes an unwinding extension along its central axis which winds for self-burial of the seed as it dries.