Scientific Name:
Pterocarya
spp.
Pronunciation:
ter-o-KA-ri-a
Common Name:
wingnut
Family Name:
Juglandaceae
Plant Type:
Tree - deciduous
Key ID Features:
Leaves pinnately compound, up to 40cm long, with (7-)13-21(-27) mostly lanceolate, finely toothed, stalkless leaflets that are each 5-12cm long; male catkins up to 12cm long, female catkins up to 50cm long; winged-nut clusters on persistent pendulous trusses. Winter ID: cyclindrical flower buds; pith chambered.
Habit:
Horizontal, Open, Spreading
Form:
Oval - vertical, Round
Texture:
Medium - coarse
Mature Height:
15 - 22m
Mature Spread:
15 - 25m
Growth Rate:
Moderate
Origin:
Canada - eastern, Central / west Asia, S.E. Asia / Japan / China
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun
Soil/Growing Medium:
Well-drained
Water Use:
Moderate
Landscape Uses:
Shade tree, Specimen plant, Street (boulevard tree), Winter interest
Additional Info:
Google. Species shown include Caucasian wingnut (semi-circular fruit wings, rachis not winged) and Chinese wingnut (elongated fruit wings, winged rachis). Compare to Rehder wingnut (P. fraxinifolia x P. stenoptera).
Leaf Morphology:
Form:
Compound
Arrangement:
Alternate
Texture/Venation:
Soft flexible
Surfaces:
Lustrous, Distinctive smell
Compound Leaf:
Odd-pinnate
Colour in Fall:
Yellow
Shapes:
Elliptic, Lanceolate, Oblanceolate, Oblong
Apices:
Acuminate
Bases:
Rounded
Margins:
Serrulate
Additional Info:
15 (-23) leaflets per leaf
Inflorescence Type:
Catkin (ament)
Flower Morphology:
Monoecious plant
Number Of Petals:
0
Ovary Position:
Inferior
Colour (petals):
Not showy, Green-yellow
Flower Scent:
None
Flower Time at Peak:
Apr, May
Fruit Type:
Nut, Samara
Fruit Colour:
Green
Fruiting Time:
Jun
Additional Info:
Showy
Bark Morphology:
Showy, Deeply fissured
Bark or Stem Colour:
Dark Grey, Brown, Black
Leaf Bud Type:
Oblong, Stalked (Distinctive smell)
Leaf Scar Shape:
U-shaped
Organ Modifications:
Ectomycorrhizae
Propagation:
Seed, Grafting
Pest Susceptibility:
(Pest resistant, Disease resistant, Drought tolerant)
Course(s):
- not used (off campus)
Location(s):
- (NCA) Not Currently Available : KPU Surrey Campus, west most entrance, q.2, Darts Hill