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Sesbania formosa (F.Muell.) N.T.Burb.
White Dragon Tree

Austral.J.Bot. 13:115 (1965)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Tree, 2.5-13 m high. Fl. white/cream, May to Sep. Alluvium, sand. Along creeks & rivers, margins of swamps.

Grazyna Paczkowska, Descriptive Catalogue, 1 August 1996

Scientific Description

Genus Sesbania. Form erect. Habit tree. Stems Indumentum glabrous, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section terete, Spiny on any part of plant not spiny. Leaves or phylloclades Presence clearly present, Position alternate, Leaves compound, Leaves or phylloclade continuous with stem not continuous with stem, Cross section of leaf or leaflet flat with flat margins, Margins of leaf or leaflet entire, Tuberculate tubercles absent, Pustules or glands absent. Length Leaf length 240-250. Width (entire leaves only) Leaf width NaN (?). Leaflets Number more than three, Number of leaflets (if more than three) 30-32. Terminal leaflet Presence present, Stalk stalked. Indumentum Presence hairy, Type gland-tipped. Stipules Presence present but early deciduous ( only visible on youngest leaves ), Glands without glands, Ribs ribless. Length Stipule length 1-3. Bracteoles Presence present but early deciduous, Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Length Bracteole length NaN (?). Pedicel Presence present, Indumentum glabrous. Length Pedicel length 1.5-3. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 20-22. Indumentum Presence glabrous. Corolla Colour patterning uniformly coloured, Colour (when uniformly coloured) white, Petal claws ( the narrow base of the petals present. Length Corolla length 75-80. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 70-75. Wings Auricles not auriculate. Length Wing length 70-85. Keel Auricles not auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 70-80. Stamens Number ten. Anthers anther length NaN (?), Position at two different levels (filaments alternately long and short). Filaments Fusion united in an open sheath with one free stamen. Length Filament length 70-80. Ovary Placement stipitate. Indumentum Presence glabrous. Style Indumentum glabrous, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 86-90. Fruit Type dehiscent (a pod or follicle), Constriction not constricted between the seeds, Compression flat or compressed, Placement stipitate, Beak beaked. Length Fruit length NaN (?). Width Fruit width NaN (?). Indumentum Presence glabrous. Flowering time May, June, July, August or September. Distribution Botanical Province Northern or Eremaean, IBRA Bioregion Great Sandy Desert, Pilbara, Carnarvon, Gascoyne, Northern Kimberley, Victoria Bonaparte, Central Kimberley, Ord-Victorian-Plain or Dampierland.

C. Hollister and K.R. Thiele, 17 April 2024


IBRA Regions
Carnarvon, Central Kimberley, Dampierland, Darwin Coastal, Gascoyne, Great Sandy Desert, Indian Tropical Islands, Northern Kimberley, Ord Victoria Plain, Pilbara, Victoria Bonaparte.
IBRA Subregions
Ashburton, Berkeley, Cape Range, Chichester, Fitzroy Trough, Fortescue, Hamersley, Hart, Keep, McLarty, Mitchell, Pentecost, Pindanland, Purnululu, Roebourne.
Local Government Areas (LGAs)
Ashburton, Broome, Christmas Island, Derby-West Kimberley, East Pilbara, Halls Creek, Karratha, Meekatharra, Port Hedland, Upper Gascoyne, Wyndham-East Kimberley.