Bitterwood Tree
Picrasma
A genus of deciduous trees and shrubs known for their extremely bitter bark and medicinal …
Foliage fossils assigned to Ginkgoites pluripartita illustrate the remarkable morphological diversity of ancient gymnosperm lineages during the Mesozoic era. This extinct species is primarily documented through leaf compressions found in Early Cretaceous sedimentary basins.
Scientific analysis of these leaves provides critical data for understanding the evolution and diversification of prehistoric seed plants. The stratigraphic occurrence of these fossils helps geologists date continental sediment deposits.
Leaves of Ginkgoites pluripartita are characterized by a highly dissected blade that is divided into numerous narrow lobes. The name pluripartita directly references this many-parted division, which distinguishes it from species with more complete or semi-circular blades.
Each lobe features parallel veins that branch dichotomously and extend to the tips of the segments. Fine epidermal preparations from these fossils show a thick cuticle with distinct stomatal structures on the lower surface of the leaf.
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 …