„Bjarkarætt“: Munur á milli breytinga

===Núlifandi tegundir===

*Betuloideae

*Coryloideae

**''[[Corylus]]'' <small>L. 1753</small> — Hesliviður

**''[[Ostrya]]'' <small>Scop. 1760</small> —

**''[[Ostryopsis]]'' <small>Decne. 1873</small> —

 

*[[Útdauð|†]]''[[Asterocarpinus]]''

*†''[[Coryloides]]''