Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
fruits up close
A native of Asia, widely cultivated, especially for hedges, and increasingly frequently escaping into forests, swamps, fields, and dunes. First collected in 1909 in St. Clair Co.
Doubtless dispersed largely by birds that eat the bright red fruit; may become invasive in some woodland settings.
A few vegetative collections have 3-forked rather than simple spines at the nodes, with larger leaves than expected in B. thunbergii, and are probably B. ×ottawensis C. K. Schneid., a hybrid with B. vulgaris.