Description
The stem of Lutèce typically forks at a height of between 1 and 2 m, where 3 to 5 steeply ascending branches develop in conjunction with more obtusely angled lower side branches to form an amorphous open crown. The ultimate size and shape of this cultivar remains unknown but, given its ancestry, it should reach at least 30 m in height.
The trees planted in the Bois de Vincennes attained an average height of 12.5 m with a trunk diameter of 22 cm at 20 years of age. Quick growing on moist, well-drained soils, increasing in height by an average of 80 cm per annum, the tree commences flowering in late March when aged seven years.
Lutèce is most reliably identified by the shape and colour of its leaves; almost orbicular < 11 cm long × 10 cm wide, the acuminate apex far less pronounced than in most other elms, and bright grass-green in colour, with a rough upper surface. The leaves flush relatively late, rarely before May in England. The samarae are obovate, slightly notched at the outer end, 14 – 22 mm long by 11 – 17 mm broad. The seed is not central but slightly nearer the notch, and ripens in late May.
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Lutèce samarae.
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White-letter Hairstreak on Lutèce, Julita, Sweden. Photo: Leif Wahlberg
Read more about this topic: Ulmus 'Nanguen' = Lutece
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