This document provides a classification of trees based on their leaf characteristics. It divides trees into two main categories: conifers and broadleaved trees. Conifers generally have needle-like or scale-like leaves and reproduce via cones rather than flowers. Broadleaved trees can have compound, simple lobed, or simple unlobed leaves. The document then further categorizes and describes numerous tree species based on attributes of their leaves such as shape, margin, texture, and whether they are deciduous or evergreen.

1. Classification of trees

2. Classification of trees
Conifers
Broadleaved trees
Needle-like leaves
Scale-like leaves
Compound leaves
Simple leaves

3. Classification of trees
Coniferous trees generally have narrow, hard
leaves that are known as scales or needles,
depending on their shape. Nearly all of them are
evergreen.
Conifers do not have true flowers; instead, they
produce cones.

4. Conifers with needle-like leaves
 Pine
 Fir
 Cedar
 Yew

5. Pine (pinua/pino)
Persist ence evergreen
Arrangement Clusters of
three
Type simple
Shape needle-like
Margin entire
Text ure Vertical
cracking
Scientific name: Pinus radiata

6. Fir (izeia/abeto)
Persist ence evergreen
Arrangement alternate
Type simple
Shape needle-like
Margin entire
Text ure
(Young)
smooth
older scaly
Scientific name: Abies alba

7. Cedar (zedroa/cedro)
Persist ence evergreen
Arrangement whorled
Type simple
Shape needle-like
Margin entire
Text ure Vertical
cracking
Scientific name: Cedros atlantica

8. Yew (hagina/tejo)
Persist ence evergreen
Arrangement alternate
Type simple
Shape needle-like
Margin entire
Text ure Smooth
peeling
Scientific name: Taxux baccata

9. Conifers with scale-like leaves
Cypress
Lawson Cypress

10. Cypress (nekosta/ciprés)
Persist ence evergreen
Arrangement whorled
Type simple
Shape scale-like
Margin entire
Text ure
(When young)
smooth
(When older)
Vertical
cracking
Scientific name: Cupressus sempervirens

11. Lawson cypress (Lawson altzifrea/ciprés de Lawson)
Persist ence evergreen
Arrangement opposite
Type simple
Shape scale-like
Margin
Text ure Vertical
cracking
Scientific name: Chamaecyparis lawsoniana

12. Broadleaved trees with compound leaves
 Serrate
(scaly) Service tree
(scaly) Elder
(vertical cracking) Ash
(smooth) Rowan
Horse chestnut
Entire
(linear) Mimosa
(ovate-lanceolate) Walnut
(ovate) Black locust
Tree of heaven
(lanceolate) Honey locust

13. Service tree (gurbe/ serbal)
Persist ence deciduous
Arrangement opposite
Type Compound
(up to 21 leaflets)
Shape lanceolate
Margin serrate
Text ure scaly
Scientific name: Sorbus domestica

14. Elder (intsusa beltza/saúco)
Persist ence deciduous
Arrangement opposite
Type Compound
(5-7 leaflets up
to 20 cm long)
Shape lanceolate
Margin serrate
Text ure scaly
Scientific name: Sambucus nigra

15. Ash (lizarra/freno)
Persist ence deciduous
Arrangement opposite
Type Compound
(up to 13
leaflets, each 10
cm long)
Shape lanceolate
Margin serrate
Text ure Vertical
cracking
Scientific name: Fraxinus excelsior

16. Rowan (otsolizarra/serbal de los cazadores)
Persist ence deciduous
Arrangement opposite
Type Compound
(up to 15 leaflets)
Shape lanceolate
Margin serrate
Text ure smooth
Scientific name: Sorbus aucuparia

17. Horse chestnut
(indi gaztainondo/castaño de Indias)
Persist ence decidouous
Arrangement opposite
Type Compound
(5-7 leaflets)
Shape lobed
Margin serrate
Scientific name: Aesculus hippocastanum
Text ure
(When young)
smooth
(When older)
scaly

18. Mimosa (mimosa/mimosa)
Persist ence evergreen
Arrangement
alternate
Type Compound
25-40 pairs of leaflets)
Shape linear
Margin entire
Text ure smooth
Scientific name: Acacia dealbata
When flowering in late winter

19. Walnut (intxaurrondo/nogal)
Persist ence deciduous
Arrangement Opposite
Type Compound
(5-9 leaflets)
Shape Ovate/lanceolate
Margin entire
Text ure
(Young)
smooth
older vertical
cracking
Scientific name: Juglans regia

20. Black locust (Sasiarkazia/falsa acacia)
Persist ence deciduous
Arrangement opposite
Type Compound
(13-25 leaflets)
Shape ovate
Margin entire
Text ure Vertical
cracking
Scientific name: Robinia pseudoacacia

21. Tree of the heaven (ailantoa/ailanto)
Persist ence deciduous
Arrangemen
t
alternate
Type Compound
(15 or more pair of
leaflets)
Shape ovate
Margin entire
Text ure Vertical
cracking
Scientific name: Ailanthus altissima

22. Honey locust (akazia hiruarantza/acacia de tres púas)
Persist ence deciduous
Arrangemen
t
alternate
Type Compound
(10-17 pair of leaflets)
Shape lanceolate
Margin entire
Text ure scaly
Scientific name: gleditsia triacanthos

23. Broadleaved trees with simple lobed leaves
 Opposite Marple, Sycamore
 Alternate
(Smooth)
(entire/serrate) Fig tree
(fan shape) Gingko
(smooth with diamonds) White poplar
(peeling) London plante
(Vertical cracking)
(entire) Oak, Tulip tree
(serrate) Hawthorn
(Scaly) Sweet Gum

24. Marple (astigarra/arce)
Persist ence decidious
Arrangement opposite
Type Simple
(up to 10 cm wide)
Shape star-shaped
Margin Lobed entire
Text ure scaly
Scientific name: Acer campestre

25. Sycamore (astigar zuria/falso plátano)
Persist ence decidious
Arrangement opposite
Type simple (8-15 cm)
Shape star-shaped
Margin Lobed entire
(3-5 lobes)
Text ure scaly
Scientific name: Acer pseudoplatanusNote: Its leaves are very
similar to those of the
London plante's

26. Fig tree (pikondoa/higuera)
Persist ence decidious
Arrangement alternate
Type Simple (10-20 cm)
Shape ovate
Margin Lobed serrate
Lobed entire
(3-7 lobes)
Text ure smooth
Scientific name: ficus carica

27. Ginkgo (ginkgo/ginkgo)
Persist ence deciduous
Arrangement alternate
Type Simple (5-10 cm)
Shape fan
Margin Lobed
(2)/entire
Scientific name: Ginkgo biloba
Text ure
(Young)
smooth
older vertical
cracking

28. White poplar (zurzuria/álamo blanco)
Persist ence deciduous
Arrangement alternate
Type Simple
(up to 10 cm long)
Shape star-shaped
Margin lobed sinuate
(5-3 lobes)
Text ure Smooth with
diamonds
Scientific name: populus alba

29. London plante (platanondoa/plátano)
Persist ence deciduous
Arrangement alternate
Type Simple
(up to 20 cm long)
Shape star-shaped
Margin lobed
Text ure peeling
Scientific name: platanus hispanica

30. Oak (haritza/roble)
Persist ence deciduous
Arrangement alternate
Type simple
Shape ovate
Margin Lobed/entire
Text ure Vertical
cracking/ scaly
Scientific name: Quercus robur

31. Tulip tree
(idi-bihotz arbola/tulipero de Virginia)
Persist ence deciduous
Arrangement alternate
Type simple (7-12 cm)
Shape lobed
(4 pointed lobes)
Margin entire
Text ure Vertical cracking
Scientific name: Liriodentron tulipifera

32. Hawthorn (elorri zuria/espino albar)
Persist ence deciduous
Arrangement alternate
Type Simple
(up to 5 cm long)
Shape oval
Margin Lobed/serrate
(3 or 5 lobes)
Text ure Vertical
cracking
Scientific name: Crataegus monogyna

33. Sweet gum (Likidanbar/liquidambar)
Persist ence deciduous
Arrangemen
t
alternate
Type Simple
(up to 15 cm long)
Shape star-shaped
Margin Lobed/serrate
Text ure scaly
In autumn
Scientific name: Liquidambar styraciflua

34. Broadleaved trees with simple
unlobed evergreen leaves
 evergreen
(scaly)
(lanciolate) Holm oak
(ovate-lanciolate) Kermes oak
(smooth)
(ovate) Magnolia
(ovate toothed) Holly
(lanceolate) Laurel
(peeling) Gum tree
(vertical cracking) Privet, Olive tree
(irregular vertical cracking) Cork oak

35. Holm oak (artea/encina)
Persist ence evergreen
Arrangement alternate
Type Simple
(up to 10 cm long)
Shape laceolate
Margin serrate/entire
Text ure scaly
Scientific name: Quercus ilex

36. Kermes oak (abaritza/coscoja)
Persist ence evergreen
Arrangement alternate
Type simple
Shape Lanceolate/ovate
Margin serrate
Text ure scaly
Scientific name: Quercus coccifera

37. Magnolia (magnolia lorandi/magnolia)
Persist ence evergreen
Arrangement alternate
Type Simple
(10-20 cm)
Shape ovate
Margin entire
Text ure smooth
Scientific name: Magnolia grandiflora

38. Holly (gorostia/acebo)
Persist ence evergreen
Arrangement alternate
Type Simple
(6-8 cm)
Shape ovate
Margin Lobed/toothed
Text ure smooth
Scientific name: ilex aquifolium

39. Laurel (ereinotz/laurel)
Persist ence evergreen
Arrangement alternate
Type Simple
(3-9 cm)
Shape Ovate
lanceolate
Margin entire
Text ure smooth
Scientific name: Laurus nobilis

40. Gum tree (eukalipto/eucalipto)
Persist ence evergreen
Arrangemen
t
Opposite (young)
alternate
Type Simple
(8-30 cm)
Shape lanceolate
Margin entire
Text ure Peeling in
curling strips
Scientific name: Eucalyptus globulus

41. Privet (beltzale/aligustre)
Persist ence evergreen
Arrangement opposite
Type simple
(6-12 cm)
Shape ovate
Margin entire
Text ure Vertical
cracking
Scientific name: Ligustrum japonicum

42. Olive tree (olibondoa/olivo)
Persist ence evergreen
Arrangement opposite
Type simple
(3-9 cm)
Shape lanceolate
Margin entire
Text ure Vertical
cracking
Scientific name: Olea europaea

43. Cork oak (artelatza/alcornoque)
Persist ence evergreen
Arrangement alternate
Type simple
Shape ovate
Margin entire/serrate
Text ure Irregular vertical
cracking
Scientific name: Quercus suber

44. Broadleaved trees with simple unlobed
deciduous leaves
 Heart-shaped
(Vertical cracking) Lime, Princess tree
(Irregular vertical cracking) Poplar
(scaly) Judas Tree
 Ovate
(serrate) Elm, Japanese cherry, Cherry plum
(entire) Beech
 Ovate /triangular Birch
 Round
(smooth) Hazel
(smooth with diamonds) Aspen
(scaly) Alder
Lanceolate
(Alternate)
(Entire) Wipping willow
(Vertical cracking) Chestnut

45. Lime/Linden (ezkia/tilo)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape ovate
heart-shaped
Margin serrate
Text ure Vertical
cracking
Scientific name: Tilia cordata

46. Princess-tree
(paulownia/paulonia tomentosa)
Persist ence deciduous
Arrangemen
t
opposite
Type simple (13-25 cm)
Shape heart-shaped
Margin entire
Scientific name: Paulownia tomentosa
Text ure
(Young)
smooth
older vertical
cracking

47. Poplar (makala/chopo)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape ovate
heart-shaped
Margin serrate
Text ure irregular vertical
cracking
Scientific name: Populus nigra

48. Judas tree (amodio-zuhaitz/árbol del amor)
Persist ence deciduous
Arrangemen
t
alternate
Type simple (7-12 cm)
Shape heart-shaped
Margin entire
Text ure scaly
Scientific name: Cercis siliquastrum
In spring

49. Elm (zumarra/olmo)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape ovate
Margin serrate
Text ure Vertical craking
Scientific name: Olmus minor

50. Japanese Cherry
(gereziondo japoniar/ciruelo japonés)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape ovate,
lanceolate
Margin serrate
Text ure smooth
Scientific name: Prunus serrulata
In spring

51. Cherry plum (gerezi-aranondoa/ciruelo de Pisardi)
Persist ence decidous
Arrangemen
t
alternate
Type Simple (2-7 cm)
Shape ovate
Margin serrate
Text ure smooth
Scientific name: Prunus cerasifera Pissardii

52. Beech (pagoa/haya)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape ovate
Margin entire
Text ure smooth
Scientific name: fagus sylvatica

53. Birch (urkia/abedul)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape Ovate/triangular
Margin serrate
Text ure smooth
Scientific name: Betula pendula

54. Hazel (hurritza/avellano)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape round
Margin serrate
Text ure smooth
Scientific name: Corylus avellana

55. Aspen (lertxun/chopo temblón)
Persist ence deciduous
Arrangemen
t
alternate
Type Simple (3-8 cm)
Shape round/ovate
Margin sinuate
Text ure Smooth with
diamonds
Scientific name: Populus tremula

56. Alder (haltza/aliso)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape round
Margin serrate
Text ure scaly
Scientific name: Alnus glutinosa

57. Weeping willow (zume negartia/sauce llorón)
Persist ence deciduous
Arrangemen
t
alternate
Type simple (8-16 cm)
Shape Lanceolate
Margin serrate
Text ure Vertical
cracking
Scientific name: Salix babylonica

58. Chestnut (gaztainondoa/castaño)
Persist ence deciduous
Arrangemen
t
alternate
Type simple
Shape lanceolate
Margin serrate
Text ure Vertical
cracking
Scientific name: Castanea sativa