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Genus Haloragodendron Family Haloragaceae

Description: Shrubs or small trees, glabrous; stems ± square with 4 prominent ribs.

Leaves opposite with toothed margins, juveniles pinnatisect or pinnatifid, midrib prominent; petiolate or sessile.

Inflorescences simple or compound dichasia in an elongated spike, terminal and lateral. Flowers cream, rarely red, 4-merous, ± sessile or pedicellate; sepals 4, triangular, smooth; petals 4, boat-shaped to flat. Stamens 8; anthers shortly apiculate. Ovary 4-locular, glabrous; styles 4.

Fruit variable in shape, obovoid to obpyramidal, 4 ribbed and winged, pericarp ± spongy.


Photo © ANBG

Distribution and occurrence: World: 6 species, endemic Australia. N.S.W., Vic., W.A.

Text by Peter G. Wilson
Taxon concept:

 Key to the species 
1Fruits ovoid, obtusely angled when dry, never strongly ribbedHaloragodendron gibsonii
Fruits obovoid to obpyramidal, strongly angled and ribbed, or winged2
2Leaves usually 1–1.5 cm long; fruit angled and ribbedHaloragodendron monospermum
Leaves at least 2.5 cm long; hypanthium and fruit distinctly winged
                       Back to 1
3
3Wings conspicuously veined; anthers 2–4 mm longHaloragodendron baeuerlenii
Wings not conspicuously veined; anthers mostly 4–6 mm long
                       Back to 2
Haloragodendron lucasii

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