| Particular soil / habitat | Humid atmosphere | soils rich in nitrogen, neutral. | tolerate limestone | tolerate limestone | tolerate limestone |
| Lifespan | 600 years | 500 years | 120 years | 500 years | 150 years |
| Size | 30 m
(quick growth) | 25 m
(quick growth) |
10-15 m, often numerous trunks |
20 m |
15 m, often numerous trunks |
| Bark | shedding in dark grey scales clearly and yellowish | smooth blackish reddish-brown, then deeply cracked harsh, | cracked clearly in dark grey, separated by blades thick corkies | shedding in grey square scales | grey - dark, cracked vertically |
| Leaves | L = 18 cm
5 toothed lobes. | big (35 cm),
5-7 barely toothed lobes, fine. | small (10 cm)
3-5 lobes very cut away, rounded margins. | L = 18 cm
3-5 rounded lobes, without tips, and smooth. | small (8 cm), coriaceous, 3 lobes only, smooth margin. Shining dark green top. |
| Petiole | 5 - 10 cm | long (15 cm), containing latex. |
a bit long |
a bit long |
short |
| Flowers... |
green, pendulous clusters (12 cm) |
small, green, upright clusters (corymbs) |
small, green, upright clusters (corymbs) |
small, green, upright clusters (corymbs) |
yellow pendulous racemes. |
| produced | in April, after leaves | in March-April, before leaves | in April-May, with leaves | in April, with leaves | in April-May, with leaves |
| Fruits | 2 wings form an acute angle |
2 wings form an angle a liitle acute (plan!). |
2 wings are lined up; grouped by 4, red spotted, in plan. | grouped in clusters with bowed red peduncle. Red. | small; acute angle; becoming tinged with red. |
