Without getting even a packet of nuts during the flight, pine pollen survives air travel pretty well.
POLLEN POWER Spherical grains of pollen from loblolly pines show their vigor by sprouting elongated tubes. Floyd Bridgwater/USDA Forest Service
PRECISION PINE The reproductive parts of loblolly pines shed pollen into the wind and capture grains produced by other trees as part of a delicately timed cycle.
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