Beilschmiedia obtusifolia

Beilschmiedia obtusifolia is a rainforest tree in the laurel family Lauraceae, found in rainforests of eastern Australia and also in New Guinea.[2][3] In Australia it ranges from Port Macquarie in New South Wales[4] northwards to Cape York Peninsula in Queensland, within tropical and sub tropical rainforests, usually on the more fertile basaltic sites, but sometimes close to the sea. Its common names include blush walnut, hard bolly gum, and nut wood.[2]

Beilschmiedia obtusifolia
large tree at Tooloom scrub
Blush walnut - juvenile
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Laurales
Family: Lauraceae
Genus: Beilschmiedia
Species:
B. obtusifolia
Binomial name
Beilschmiedia obtusifolia

Description

A medium to large tree.[5] The cylindrical trunk is brown or creamy with vertical lines of raised pustules. The trunk features scales with round depressions, colloquially known as "bollies", similar to the related Bollygum, Litsea reticulata. The tree's base is flanged in larger specimens.

Shoots and stems hairy. The elliptic or reverse lanceolate shaped leaves are alternate and not toothed, 8 to 10 cm long and 2 to 4 cm wide. Bluntly pointed or sometimes notched at the tip. Leaf stalks 5 mm long. Leaf venation is prominent on both sides, with a raised midrib.

Cream flowers form in panicles from October to November, the flowers have an unpleasant scent. The fruit ripens December to July, being a black egg shaped drupe with a scented green oily aril. 20 to 30 mm long with a single seed inside. As with most Australian laurels, removal of the fleshy aril is advised to assist seed germination, which is slow but fairly reliable with Beilschmiedia obtusifolia.

The fruits are eaten by a variety of birds, including the pied imperial pigeon, rose-crowned fruit dove, topknot pigeon, wompoo fruit dove, metallic starling, Australasian figbird, magnificent riflebird, bowerbird, and spotted catbird.[3]

References
  1. "Beilschmiedia obtusifolia". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 26 July 2013.
  2. F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Beilschmiedia obtusifolia". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 2 June 2021.
  3. Cooper, Wendy; Cooper, William T. (June 2004). Fruits of the Australian Tropical Rainforest. Clifton Hill, Victoria, Australia: Nokomis Editions. p. 243. ISBN 9780958174213. Retrieved 2 June 2021.
  4. "Beilschmiedia obtusifolia". PlantNET - NSW Flora Online. Retrieved 2009-08-03.
  5. Wingham Brush Nature Reserve Pamphlet, National Parks & Wildlife Service of New South Wales 2008
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