Scientific Name:
Acer griseum
Pronunciation:
AY-sur GRIZZ-ee-um
Common Name:
paperbark maple
Family Name:
Sapindaceae
Plant Type:
Tree - deciduous
Key ID Features:
Bark cinnamon (orange-red), papery, exfoliating; leaves opposite, trifoliate, leaflets mostly obovate with 3-5 pairs of rounded teeth or small lobes, most elliptic-obovate, 4-8cm long x 2-6cm wide, terminal petiolule <1cm long (side leaflets sessile), bright red fall colour; schizocarp wings; schizocarps 5-6cm wide, thick edge of wings at 70-90 degree angle, each samara 4-5cm long. Winter ID: exfoliating bark; buds conical, sharply pointed, dark purplish-brown to black, 5mm long.
Habit:
Open, Spreading, Twiggy
Form:
Oval - vertical, Round
Texture:
Medium
Mature Height:
7 - 10m
Mature Spread:
5 - 7m
Growth Rate:
Slow
Origin:
S.E. Asia / Japan / China
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Acidic, Well-drained
Water Use:
Moderate
Landscape Uses:
Accent plant, Fall interest, Small garden/space, Specimen plant, Winter interest
Additional Info:
Leaf Morphology:
Form:
Compound
Arrangement:
Opposite
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Compound Leaf:
Trifoliate (ternate)
Colour in Summer:
Bluish, Dark-green, greyish to blue-green undersides
Colour in Fall:
Red
Shapes:
Obovate
Apices:
Acute
Bases:
Attenuate, Oblique (uneven), Obtuse
Margins:
Dentate
Additional Info:
Spectacular fall colour
Inflorescence Type:
Flowers clustered, Corymb-like
Flower Morphology:
Flowers perfect
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Colour (petals):
Not showy, Yellow, Green
Flower Scent:
None
Flower Time at Peak:
Mar, Apr
Fruit Type:
Samara, Schizocarp
Fruit Colour:
Green-yellow, Brown
Fruiting Time:
Jun, Jul
Additional Info:
Showy, Persistent, Schizocarps split into samara-like mericarps after dispersal; seed <1cm long
Bark Morphology:
Showy, Papery, Exfoliating
Bark or Stem Colour:
Orange, Red, Brown
Leaf Bud Type:
Narrowly conical
Leaf Scar Shape:
V-shaped
Propagation:
Seed, Greenwood cuttings, Hardwood cuttings
Maintenance:
Low
Pest Susceptibility:
Galls, Heart rot, Mites, Root rot (Pest resistant, Disease resistant)
Course(s):
- HORT 1155
- Level 1 Apprenticeship
Location(s):
- (AGB) Acer Griseum Bed : q.2,524, 525
- (NRY) NuRserY
- (TFL) Turf Field Lab
- (TFLN) Turf Field Lab North