Bitterwood Tree
Picrasma
A genus of deciduous trees and shrubs known for their extremely bitter bark and medicinal …
Discovered in ancient Mesozoic geological strata, the fossil species Chiropteris zeilleri serves as an important indicator of prehistoric terrestrial ecosystems. This extinct taxon is recognized through fossilized impressions of its distinctive foliage, which are preserved in fine-grained sedimentary rocks.
Paleobotanists study these rare impressions to understand the diversity of ancient non-flowering flora. The distribution of these fossils helps reconstruct historical landmasses and continental configurations.
Foliage of Chiropteris zeilleri is characterized by broad, fan-shaped or wedge-shaped leaf blades with fine venation patterns. The veins radiate from the base of the leaf and dichotomously branch toward the outer margin, forming a delicate reticulate or parallel network.
Unlike many modern leaves, these fossil specimens lack modern vascular structures, reflecting their primitive botanical nature. The leaf margin is typically smooth or slightly lobed, depending on the preservation state of the fossil specimen.
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 …