ольха ( Alnus )
- black alder
- Caucasian alder
- dwarf alder
- European alder
- European green alder
- green alder
- hazel alder
- Italian alder
- Japanese green alder
- Manchurian alder
- mountain alder
- nodding alder
- red alder
- seaside alder
- sierra alder
- Sitka alder
- smooth alder
- speckled alder
- spiked alder
- thin-leaved alder
- wavy-leaved alder
- white alder