Editing Alder (section)

==== Subgenus ''Alnus'' ====
[[File:Alnus incana rugosa leaves.jpg|right|thumb|Speckled alder (''Alnus incana'' subsp. ''rugosa'')—leaves]]
[[File:Alnus serrulata leaves.jpg|right|thumb|Leaves of the tag alder]]

Trees with stalked shoot buds, male and female catkins produced in autumn (fall) but stay closed over winter, pollinating in late winter or early spring, about 15–25 species, including:

{{Div col}}
* ''[[Alnus acuminata]]'' {{small|Kunth}} 
** subsp. ''acuminata'' {{small|Kunth}}
** subsp. ''arguta'' {{small|(Schltdl.) Furlow}}
** subsp. ''glabrata'' {{small|(Fernald) Furlow}}
* ''[[Alnus cordata]]''  {{small|(Loisel.) Duby}} 
* ''[[Alnus cremastogyne]]'' {{small|Burkill}} 
* ''[[Alnus firma]]'' {{small|Siebold & Zucc.}} 
* ''[[Alnus glutinosa]]'' {{small|(L.) Gaertn.}} 
** subsp. ''barbata'' {{small|(C.A.Mey.) Yalt.}}
** subsp. ''glutinosa'' {{small|(L.) Gaertn.}}
** subsp. ''incisa'' {{small|(Willd.) Regel}}
** subsp. ''laciniata'' {{small|(Willd.) Regel}}
* ''[[Alnus hirsuta]]'' {{small|(Spach) Rupr.}} 
* ''[[Alnus incana]]'' {{small|(L.) Moench}}
** subsp. ''incana'' {{small|(L.) Moench}}
** subsp. ''kolaensis'' {{small|(Orlova) Á.Löve & D.Löve}}
** subsp. ''rugosa'' {{small|(Du Roi) R.T.Clausen}}
** subsp. ''tenuifolia'' {{small|(Nutt.) Breitung}}
* ''[[Alnus japonica]]'' {{small|(Thunb.) Steud.}} 
* ''[[Alnus jorullensis]]'' {{small|Kunth}} 
** subsp. ''lutea'' {{small|Furlow}}	
** subsp. ''jorullensis'' {{small|Kunth}}
* ''[[Alnus lusitanica]]'' {{small|Vít, Douda, & Mandák}}<ref name="Vít-2017">{{cite journal |last1=Vít |first1=Petr |last2=Douda |first2=Jan |last3=Krak |first3=Karol |last4=Havrdová |first4=Alena |last5=Mandák |first5=Bohumil |year=2017 |title=Two new polyploid species closely related to ''Alnus glutinosa'' in Europe and North Africa – an analysis based on morphometry, karyology, flow cytometry and microsatellites |journal=Taxon |volume=66 |issue=3 |pages=567–583 |doi=10.12705/663.4}}</ref>
* ''[[Alnus matsumurae]]'' {{small|Callier}}
* ''[[Alnus nepalensis]]'' {{small|D.Don}} 
* ''[[Alnus oblongifolia]]'' {{small|Torr.}}
* ''[[Alnus orientalis]]'' {{small|Decne.}}
* ''[[Alnus rhombifolia]]'' {{small|Nutt.}} 
* ''[[Alnus rohlenae]]'' {{small|Vít, Douda, & Mandák}}<ref name="Vít-2017" />
* ''[[Alnus rubra]]'' {{small|Bong.}}
* ''[[Alnus serrulata]]''  {{small|(Aiton) Willd.}}
* ''[[Alnus subcordata]]''  {{small|C.A.Mey.}}
* ''[[Alnus tenuifolia]]'' {{small|Nutt.}}
* ''[[Alnus trabeculosa]]'' {{small|Hand.-Mazz.}}
{{Div col end}}