The chestnuts traditionally eaten at Christmas are the European chestnut, Castanea sativa Mill, native to southern Europe and adjacent Asia. It has leaves pubescent beneath and aso brown-dotted, especially near the petiole.
1. Outer bud scales and undersides of the leaves glabrous or nearly so; spines on involucres surrounding nuts glabrous.
1. Buds and undersides of the leaves ± densely pubescent; spines on involucres surrounding nuts pubescent.
All species found in Castanea
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. July 5, 2020. https://michiganflora.net/genus.aspx?id=Castanea.