Bursts of smoke-like pollen disperse from Perilla frutescens by wind, one of the natural and fundamental means of pollen dispersal

shiso perilla frutescens leaves pollen tubes angiosperms flowering flowers plants biodiversity terrestrial species botany pollen phytology pollination ecology perilla nature japan asian dispersal fertilization structure pointy ends beefsteak common smoke genetic bursts green closeup biology mint wind ovalshaped local diversification bursting population spread white unleash diversity fundamental