Corylus johnsonii
Plants
Kevmin · cc_by_sa
About
Corylus johnsonii is an extinct species of hazel known from fossil fruits found in the Klondike Mountain Formation deposits of northern Washington state, dated to the early Eocene Ypresian stage. Based on described features, C. johnsonii is the oldest definite species in the genus Corylus.
Summary from Wikipedia
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Growing details and traits for Corylus johnsonii in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.