Jack’s hybrid poplar
- Latin name: Populus xjackii Sarg.
- French name: Peuplier hybride de Jack
- Taxonomic Serial Number: 22467
Description
Leaves
Form
- Triangular-ovate, tip short, taper-pointed
- Base heart-shaped, with 2 or 3 glands
Length
- 7–10 cm
Colour
- Upper surface bluish-green
- Lower surface paler
Margin
- Preformed leaves with 15–30 teeth per side
- Neoformed leaves with 25–50 teeth per side
Petiole
- Slightly flattened
- 2.5–5 cm long
Buds
Form
- Ovoid, resinous
Length
- 9–13 mm
Colour
- Reddish
Twigs
Colour
- Reddish-brown
Flowers
Length
- Flowering catkins 5–15 cm
Structure
- Dioecious
Fruits
Form
- Catkins’ stalk hairy
Length
- Fruiting catkins up to 20 cm
Bark
Form
- Furrowed on older trees
Colour
- Greyish-brown with an orange cast
Insects and mites
Insects that cause damage to this tree.
-
Carpenterworm
Scientific name: Prionoxystus robiniae (Peck)
-
Cottonwood crown borer
Scientific name: Sesia tibialis (Harris)
-
Poplar-and-willow borer
Scientific name: Cryptorhynchus lapathi (Linnaeus).
Foliage or buds
- Eupithecia subfuscata (Haworth)
-
Poplar bud gall mite
Scientific name: Aceria parapopuli (Keif.)
-
Poplar-and-willow borer
Scientific name: Cryptorhynchus lapathi (Linnaeus).
-
Whitetriangle leafroller
Scientific name: Clepsis persicana (Fitch)