1. Cyathea Cyathea is a fern of the genus Cyathea, and its fronds grow in a spiral shape on the branches, which is a very peculiar shape. According to scientific research, Cyathea originated from the dinosaur era at the earliest, about 180 million years ago, and is called a living fossil.
2. Thousand-year-old orchid It is the only plant in the world that never loses its leaves.
3. Sea buckthorn Sea buckthorn is a deciduous shrub plant that is extremely drought tolerant and can be used for desert greening. The orange fruits are rich in vitamins, plus sea buckthorn has been growing on land as early as 200 million years ago.
4. Posidonia seagrass Posidonia seagrass is an endemic Mediterranean water plant,[bai] the longest-lived organism in the world, and according to research reports, the lifespan of Posidonia seagrass has exceeded 100,000 years.
5. Green algae Green algae were the first plants to set foot on land, and according to the earliest evidence, spores derived from mosses were present as early as 470 million years ago, when the land was so inhospitable that many land plants are thought to have evolved from green algae.
6. Pando tree Pando trees are asexual trembling poplar forests that grow in the Americas and are the oldest trees on earth, growing from the same root system connection that started sprouting at least 80,000 years ago, and some believe that pando trees may be at least a million years old.
