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.
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
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
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
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
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
