Seed Discharge in Arceuthobium: A Photographic Study

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Science  14 Jun 1963:
Vol. 140, Issue 3572, pp. 1236-1238
DOI: 10.1126/science.140.3572.1236


Photographs, made at a speed of 5 microseconds, of the ejection of the Arceuthobium seed from its fruit, show that tumbling in the vertical plane begins soon after discharge and that most seeds have turned 90 degrees when they have traveled about 6 centimeters. As the seeds leave the fruit they have a viscous sheath around the trailing end that disintegrates after the seeds have traveled about 2 to 3 centimeters. This viscous material does not act as a rudder as has been postulated.