Betula alnoides that, by time it matures, reaches a diameter of by . The peduncle is long while the diameter of the bracts is only . The seeds are ripe from March to May and are long while the flowers bloom from October to January. "Betula alnoides" inner bark is edible and is used for making cakes and bread. It is also considered to be an antidote against snakebites and is used to treat dislocated bones. Betula alnoides Betula alnoides (; , , literally: "tiger power") is a species of birch that can be found in natural condition in such countries as
Pterocarya fraxinifolia appear in April, the male catkins thick and green, 7.5 – 12.5 cm long, the females longer with less dense flowers, bearing red styles forming fruiting catkins 30 – 50 cm long, the green, winged, nuts approximately 1.8 cm wide. The species is fast growing and grows best on flat ground or shallow slopes near river banks and in deep moist soils. The climate associated with the distribution of this tree includes mild winters and mild humid summers. It generally grows in mixed stands with other species and rarely grows in pure stands. Fossils of "Pterocarya fraxinifolia" have been described