Betula alleghaniensis Betula alleghaniensis Betula alleghaniensis, the yellow birch or golden birch, is a large and important lumber species of birch native to North-eastern North America. Its vernacular names refer to the color of the tree's bark. The name "Betula lutea" was used expansively for this tree but has now been replaced. "Betula alleghaniensis" is the provincial tree of Quebec, where it is commonly called "merisier", a name which in France is used for the wild cherry. It is a medium-sized, typically single stemmed, deciduous tree reaching tall (exceptionally to ) with a trunk typically in diameter. Yellow birch is a relatively
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