<Li> Nut surrounded by a soft , leafy involucre , multiple - stemmed , suckering shrubs to 12 m tall <Ul> <Li> Involucre short , about the same length as the nut <Ul> <Li> Corylus americana -- American hazel , eastern North America </Li> <Li> Corylus avellana -- Common hazel , Europe and western Asia </Li> <Li> Corylus heterophylla -- Asian hazel , Asia </Li> <Li> Corylus yunnanensis -- Yunnan hazel , central and southern China </Li> </Ul> </Li> <Li> Involucre long , twice the length of the nut or more , forming a ' beak ' <Ul> <Li> Corylus colchica -- Colchican filbert , Caucasus </Li> <Li> Corylus cornuta -- Beaked hazel , North America </Li> <Li> Corylus maxima -- Filbert , southeastern Europe and southwest Asia </Li> <Li> Corylus sieboldiana -- Asian beaked hazel , northeastern Asia and Japan ( syn. C. mandshurica ) </Li> </Ul> </Li> </Ul> </Li>
<Li> Nut surrounded by a soft , leafy involucre , multiple - stemmed , suckering shrubs to 12 m tall <Ul> <Li> Involucre short , about the same length as the nut <Ul> <Li> Corylus americana -- American hazel , eastern North America </Li> <Li> Corylus avellana -- Common hazel , Europe and western Asia </Li> <Li> Corylus heterophylla -- Asian hazel , Asia </Li> <Li> Corylus yunnanensis -- Yunnan hazel , central and southern China </Li> </Ul> </Li> <Li> Involucre long , twice the length of the nut or more , forming a ' beak ' <Ul> <Li> Corylus colchica -- Colchican filbert , Caucasus </Li> <Li> Corylus cornuta -- Beaked hazel , North America </Li> <Li> Corylus maxima -- Filbert , southeastern Europe and southwest Asia </Li> <Li> Corylus sieboldiana -- Asian beaked hazel , northeastern Asia and Japan ( syn. C. mandshurica ) </Li> </Ul> </Li> </Ul> </Li>
a deciduous shrub with edible brown nuts a species of hazel
a deciduous shrub with edible brown nuts a species of hazel
Corylus americana Corylus avellana Corylus heterophylla Corylus yunnanensis Corylus colchica Corylus cornuta Corylus maxima Corylus sieboldiana
Corylus americana Corylus avellana Corylus heterophylla Corylus yunnanensis Corylus colchica Corylus cornuta Corylus maxima Corylus sieboldiana