1. Attenborough's Pitcher Plant
This plant is found only in Namibia and has a highly specialized trapping mechanism to capture insects. Its leaves are shaped like deep cups to collect rainwater and sap. Only around 200 individuals of this species exist in the wild, making it one of the rarest plants on Earth. The discovery of Attenborough's Pitcher Plant was announced in 2017, after a 30-year search.
2. Wollemi Pine
This coniferous evergreen tree was thought to be extinct until a single specimen was discovered in Australia in 1994. It has a unique, spiral trunk and needle-like leaves. Only about 100 mature individuals of the Wollemi Pine are estimated to exist in the wild, due to its limited range. The discovery of this plant is often credited as one of the greatest botanical discoveries of the 20th century.
3. Atalaya Palm
This palm tree is native to the subtropical region of South America and is considered an endemic species. Its distinctive trunk can grow up to 10 meters (33 feet) tall, with a single stem that produces multiple leaves. Only around 100 individuals are estimated to remain in the wild, making it one of the rarest palms on Earth.
4. Borya Palm
This palm tree is found only in Indonesia and Malaysia, with a highly specialized adaptation to survive in low-oxygen environments. Its trunk can grow up to 5 meters (16 feet) tall, and its leaves are shaped like feathers. Only about 50 individuals of this species are estimated to exist in the wild.
5. Tahina Palm
This palm tree is endemic to Madagascar and has a unique, stilt-like trunk that allows it to survive in areas with low soil fertility. Its leaves are dark green and can reach up to 4 meters (13 feet) long. Only about 20 individuals of this species are estimated to remain in the wild.
6. Kadupul Flower
This rare flower is found only in Sri Lanka and blooms for just one night, before wilting. It has a unique, trumpet-shaped appearance and produces a sweet fragrance. Only around 10 individuals are estimated to exist in the wild, due to its rarity and limited range.
7. Slipper Orchid (Paphiopedilum spp.)
This genus of orchids is considered one of the rarest groups of plants on Earth, with over 80 species found only in the wild. They have unique, slipper-shaped flowers that mimic the appearance of female insects. Only a few hundred individuals are estimated to exist in the wild.
8. Ghost Orchid (Epipogium aphyllum)
This orchid is found only in North America and has a highly specialized relationship with fungi to obtain nutrients. Its white, ghostly blooms are often mistaken for snow or mist. Only around 200 individuals of this species are estimated to exist in the wild.
9. Sumatran Orchid (Dendrobium cuthbertsonii)
This orchid is endemic to Indonesia and has a unique, columnar shape with delicate white flowers. Its range is limited to a few forest reserves, where it is found growing on tree trunks. Only about 20 individuals of this species are estimated to exist in the wild.
10. Coelogyne cristata
This orchid is found only in Madagascar and has a highly specialized adaptation to capture pollinators. Its white flowers have distinctive green markings and are often mistaken for other, more common orchids. Only around 5 individuals of this species are estimated to remain in the wild.