- Ostrya knowltonii - Information on distribution and occurrence, its value and use, characteristics, and fire ecology.
www.fs.fed.us/database/feis/plants/tree/ostkno
- Ostrya virginiana - Eastern hop-hornbeam, North America. Information on distribution and occurrence, its value and use, characteristics, and fire ecology.
www.fs.fed.us/database/feis/plants/tree/ostvir
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