Recognize the fan-shaped leaves of the Ginkgo biloba before you? This tree is a living fossil. It connects us to a time long before our modern world existed.
The Ginkgo, also known as the maidenhair tree, is a unique species. It is native to China. Ginkgo biloba is the last living species in the order Ginkgoales. This order first appeared over 290 million years ago. Fossils similar to today’s Ginkgo date back 170 million years. This makes the Ginkgo one of the oldest tree species on Earth.
The Ginkgo you see is likely planted. This species has been cultivated throughout human history. It grows well in sunny, well-drained areas. You can find Ginkgos in diverse locations from riverbanks to rocky slopes.
Did you know the Ginkgo is dioecious? This means some trees are male and others are female. The male trees have discreet, conical yellow catkins. These group in bunches. The female trees produce ovules that ripen into seeds. These seeds look like yellow plums in the autumn.
The Ginkgo seeds have a distinctive smell. They contain butyric acid. Some find the odor unpleasant. Yet, in traditional Chinese cuisine, people use the seed’s interior. They serve it in dishes on special occasions.
This tree also possesses remarkable survival strategies. It can generate shoots from its trunk base. It can also produce aerial roots in response to disturbances. These roots can then give rise to new clones. This tenacity helped Ginkgo specimens resist the Hiroshima explosion.
Beyond its historical and biological significance, the Ginkgo has medicinal uses. It is widely used for improving cognitive function and memory.
Notably, Lisbon’s Botanical Gardens play a crucial role in preserving species like the Ginkgo. Lisbon has three botanical gardens. These are the Botanical Garden of Ajuda, the Lisbon Botanical Garden, and the Tropical Botanical Garden.
These gardens collectively house a vast collection of trees. They host 2551 tree specimens. These specimens represent 462 taxa within 80 plant families. Among these taxa is the Ginkgo biloba. It is a key species in botanical gardens worldwide.
The three Lisbon gardens serve different purposes. However, they share the goals of research, education, and conservation. They contribute to urban forestry. They support urban agriculture. They conserve urban biodiversity.
Consider the Ginkgo’s presence in Lisbon. It reflects the city’s unique climate. Lisbon’s climate allows diverse species from different origins to coexist. The city’s botanical gardens showcase this diversity. They play a vital role in preserving threatened trees.
The Ginkgo biloba is not just a tree. It is a symbol of resilience. It represents a link to the distant past. It highlights Lisbon’s commitment to preserving botanical heritage. Take a moment to appreciate this ancient species. Reflect on its enduring presence in our world.