Rare twin tulips appear in Nanjing(1/3)

Two rare twin tulips in Nanjing Botanical Garden Memorial Sun Yat-Sen have attracted people's attention. Science popularizers speculated that such tulips are likely the result of natural variation of individual tulips, with the possible factors including the environment, bacterial infection, natural hybridization and so on. (Photo: China News Service/ Xu shanshan)

Two rare twin tulips in Nanjing Botanical Garden Memorial Sun Yat-Sen have attracted people's attention. Science popularizers speculated that such tulips are likely the result of natural variation of individual tulips, with the possible factors including the environment, bacterial infection, natural hybridization and so on. (Photo: China News Service/ Xu shanshan)

Two rare twin tulips in Nanjing Botanical Garden Memorial Sun Yat-Sen have attracted people's attention. Science popularizers speculated that such tulips are likely the result of natural variation of individual tulips, with the possible factors including the environment, bacterial infection, natural hybridization and so on. (Photo: China News Service/ Xu shanshan)