1. Smallest tree in the world: Salix herbacea (Dwarf willow) (Family: Salicaceae -Willow Family)
2. Largest tree in the world: Sequoiadendron giganteum (Family: Cupressaceae)
3.
Smallest flower in the world: Wolffia (Family:
Araceae)
4.
Largest flower in the world: Rafflesia (Family: Rafflesiaceae)
5. Oldest plant in the world: Larrea tridentate
6. Oldest tree in the world: Great Basin Bristlecone pine (Pinus longaeva)
