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Lasjia whelanii
	Foliage and flowers
Conservation status
	Least Concern (NCA)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Proteales
Family:	Proteaceae
Genus:	Lasjia
Species:	L. whelanii
Binomial name
	Lasjia whelanii; (F.M.Bailey) P.H.Weston & A.R.Mast, 2008
Synonyms
	Helicia whelanii F.M.Bailey, 1889; Macadamia whelanii (F.M.Bailey) F.M.Bailey, 1901;

Lasjia whelanii, also known as Whelan's silky oak, Whelan's nut oak or Whelan's macadamia, is a species of large forest tree in the protea family that is endemic to north-eastern Queensland, Australia.

History

The tree was first described in 1889 by Queensland's colonial botanist Frederick Manson Bailey as a species of Helicia, which in 1901 he moved to Macadamia, but was transferred in 2008, in a paper in the American Journal of Botany by Peter Weston and Austin Mast, to the new genus Lasjia.

Description

The dark green leaves grow up to 21 cm (8.3 in) long by 6 cm (2.4 in) wide, with four or five leaves in each whorl. The white flowers grow as inflorescences. The globular fruits are about 5 cm (2.0 in) in diameter, with the seeds strongly cyanogenetic (cyanide producing) and poisonous to humans. It produces a useful timber, suitable for construction work.^[2]

Distribution and habitat

The species occurs in the Wet Tropics of Queensland, in well-developed lowland tropical rainforest, from near sea level to an altitude of 650 m (2,130 ft).^[2]

References

^ "Species profile—Lasjia whelanii". Queensland Department of Environment and Science. Queensland Government. 2022. Retrieved 11 January 2024.
^ ^a ^b F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Lasjia whelanii". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 11 January 2024.

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[DESQLD-1] "Species profile—Lasjia whelanii". Queensland Department of Environment and Science. Queensland Government. 2022. Retrieved 11 January 2024.

[RFK-2] F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Lasjia whelanii". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 11 January 2024.

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