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Scientific Name
Allocasuarina duncanii
Family Name
CASUARINACEAE
Common Name
Duncan's Bull-Oak
Status
Rare
Height
8.0m (800cm)
Flowers
Red-brown 'tufts' of stigmas.
Fruit
Nuts
Form
Very erect, narrow-crowned tree.
Municipalities
Huon Valley; Kingborough
Communities
Wet Eucalypt Forest
Habitat Notes
Officially only known from a small population at Snug Plains. However a few other small populations are thought to exist in similar localities elsewhere in SE Tasmania. It grows in heavy clay soils in moist forest communities dominated by Euc. delegatensis ssp tasmaniensis.
Site Tolerance
Moist; Rocky; Shady
Frost Tolerance
Hardy
Soil Tolerance
Clay; Fertile; Well-drained
General Notes
First collected in l979 but it was not until 1994 that it was described and named. Susceptible to browsing by hares and rabbits. Not suitable below powerlines.
Propagation Details
Propagation Calendar
Flowering Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Collecting Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sowing Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Cutting Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Information
Seed Collection
Winged nuts in cones.female cones, up to 7cm and quite narrow.pick greyish cones from shrub, dry inpaper bags to open. sieve seed to isolate. female allocasuarinas often carry ripe or ripening fruit at most times of the year
Seed Treatment Method
Smoke
Seed Storage Life
Viable Seeds Per Gram
Seed Treatment Notes
Seeds lose viability quickly once released from the cone. Seed should be sown fresh or stored at 3-5oC to maintain long term viability. Seedlings are usually quick growing.
Germination Time
10-45 days
Suitable for Direct Seeding
Yes
Cuttings
Expected Time to Take Root
Expected Time to Plant Out
Propagation by Division
N.B. Transplant only from nearby to avoid disease.
Cutting Notes
Can be grown from cuttings of semi-hard wood. Coppice shoots taken from cut stumps or damaged plants will strike readily. Allocasuarinas have a symbiotic relationship with a root fungi (Franklia sp.) Inoculating potting soil with divets taken from beneath mature plants may be beneficial.
Copyright 2000-2009, Understorey Network Incorporated. Updated 2024-11-08
Database development and website design by
Andrew Smith