MPI Fagus Key

Copyright 1998. Taxonomic Computer Research. All Rights Reserved. May not be duplicated on paper or disk media without written permission.


Fagus species and major cultivars

1. Leaves purple to red.....30
1. Leaves green.....3
1. Leaves very bright golden yellow.....12
1. Leaves margined white to yellow (over green or purple).....40
3. Growth narrowly fastigiate.....4
3. Growth pendulous.....5
3. Growth pyramidal to globose.....6
3. Growth intensely torulose and twisted.....43

4. POSSIBLE ID=Fagus sylvatica 'Fastigiata' and 'Dawyckii'

5. POSSIBLE ID=Fagus sylvatica 'Pendula' and others

6. Leaves distinctly fasciated and crisped.....7
6. Leaves distinctly incised and cut.....8
6. Leaves serrate to dentate.....15
6. Leaves distinctly orbicular.....11

7. POSSIBLE ID=Fagus sylvatica 'Cristata'

8. incisions mostly symmetrical & leaves rarely linear.....9
8. incisions asymmetrical & leaves inside often linear.....10

9. POSSIBLE ID=Fagus sylvatica 'Laciniata'

10. POSSIBLE ID=Fagus sylvatica 'Asplenifolia'

11. POSSIBLE ID=Fagus sylvatica 'Rotundifolia'

12. Habit densely columnar & leaves slightly lobed.....13
12. Habit pyramidal to globose & leaves unlobed.....14

13. POSSIBLE ID=Fagus sylvatica 'Rohan Gold'

14. POSSIBLE ID=Fagus sylvatica 'Zlatia'

15. leaves pubescent when young & green below.....16
15. leaves glabrous or nearly so & glaucous below.....25
15. leaves glabrous or nearly so & glossy green below & always ovate.....29
16. leaves mostly entire & broadest above the middle in many leaves.....17
16. leaves toothed & broadest below or at middle.....18

17. POSSIBLE ID=Fagus orientalis

17. POSSIBLE ID> Fagus taurica Popl. is intermediate to Fagus sylvatica

18. leaf margins crenate & involucre with obovate bract-like structures.....19
18. leaf margins serrate-dentate & involucre with linear appendages.....20

19. POSSIBLE ID=Fagus crenata (Fagus sieboldii)

20. margins serrate & 9-14 pairs of veins.....21
20. margins denticulate & 5-9 pairs of veins.....22

21. POSSIBLE ID=Fagus grandifolia

21. POSSIBLE ID> more intensely pubescent in f. pubescens (var. grandifolia)

22. POSSIBLE ID> teeth shallower and prickles shorter in southern var. caroliniana

22. POSSIBLE ID=Fagus sylvatica

25. leaves glabrous below & involucre less than length of nut.....26
25. leaves glabrous below & involucre as long as nut.....27
25. leaves pubescent below & involucre as long as nut.....28

26. POSSIBLE ID=Fagus japonica

27. POSSIBLE ID=Fagus engleriana

28. POSSIBLE ID=Fagus longepetiolata (longipes, sinensis)

29. POSSIBLE ID=Fagus lucida

30. plants pendulous.....31
30. plants columnar to fastigiate.....32
30. plants pyramidal to globose.....33

31. POSSIBLE ID=Fagus sylvatica 'Purpurea Pendula' and 'Purple Fountain'

32. POSSIBLE ID=Fagus sylvatica 'Rohan Columnar' and others

33. leaves lobed to shallowly cut.....34
33. leaves serrate to dentate.....35

34. POSSIBLE ID=Fagus sylvatica 'Rohanii' and others

35. leaves intensely purple all summer.....36
35. leaves copper or red by summer.....37

36. POSSIBLE ID=Fagus sylvatica 'Riversii' and others

37. POSSIBLE ID=Fagus sylvatica f. atropunicea seedlings and 'Cuprea'

40. leaves purple with pink margin becoming whiter.....41
40. leaves green margined white and mottled white.....42

41. POSSIBLE ID=Fagus sylvatica 'Roseo-marginata'

42. POSSIBLE ID=Fagus sylvatica 'Tricolor' and rarely 'Albo-variegata'

43. POSSIBLE ID=Fagus sylvatica 'Tortuosa'