Bitterwood Tree
Picrasma
A genus of deciduous trees and shrubs known for their extremely bitter bark and medicinal …
Abundant leaf prints of Ginkgoites huttoni preserved in the Jurassic rocks of Yorkshire have provided key insights into prehistoric gymnosperms. These fossils represent one of the most thoroughly studied species within the extinct genus. They help scientists trace the evolutionary path leading to the modern ginkgo tree.
The leaves of this species are deeply divided into multiple narrow, linear segments or lobes. Each lobe features parallel dichotomous veins that extend from the base to the apex of the lamina. A distinct petiole connects the fan-like blade to the ancient stems.
Its cuticle is exceptionally thick, which allowed for remarkable preservation in sedimentary rocks. Microscopic studies show that the stomata are mostly restricted to the lower epidermal surface, a condition known as hypostomatic, which helped conserve moisture.
Picrasma
A genus of deciduous trees and shrubs known for their extremely bitter bark and medicinal …
Araucaria humboldtensis
A small, critically endangered coniferous tree native strictly to the high-altitude mountain peaks of southern …
Araucaria sect. Araucaria
Araucaria sect. Araucaria is a botanical section of evergreen conifers native to South America. It …
Araucaria
Araucaria is a genus of majestic, evergreen coniferous trees native to the Southern Hemisphere. Known …