Gompholobium marginatum R.Br.

Scientific Description

Genus Gompholobium. Form twining or climbing plants. Habit shrub, spindly shrub (broom-like). Stems Indumentum glabrous, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section terete, Spiny on any part of plant spiny at least in part. 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 10-25. Width (entire leaves only) Leaf width NaN (?). Scale leaves length mm long NaN (?). Leaflets Number three, Arrangement palmately arranged. Terminal leaflet Presence present, Stalk sessile. Indumentum Presence glabrous. Stipules Presence apparently absent even from the youngest leaves, Glands without glands, Ribs ribless. Length Stipule length 2.3-3. Bracteoles Presence present and persistent, Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Length Bracteole length NaN (?). Pedicel Presence present, Indumentum glabrous. Length Pedicel length 10-12.7. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 5.5-8. Indumentum Presence glabrous. Corolla Colour patterning uniformly coloured, Colour (when uniformly coloured) yellow, Petal claws ( the narrow base of the petals present. Length Corolla length 7-11. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 8-10. Wings Auricles not auriculate. Length Wing length 6.5-8. Keel Auricles auriculate or not auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 6-7. Stamens Number ten. Anthers anther length 0.6-0.8, Position at two different levels (filaments alternately long and short). Filaments Fusion free (or united at the very base). Length Filament length 3.2-6.7. Ovary Placement stipitate or sessile or subsessile. Indumentum Presence glabrous. Style Indumentum glabrous, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 5.5-7.5. Fruit Type dehiscent (a pod or follicle), Constriction not constricted between the seeds, Compression round in cross-section, Placement sessile or subsessile, Beak not beaked. Length Fruit length 10. Width Fruit width 5-10. Indumentum Presence glabrous. Flowering time August, September, October or November. Distribution Botanical Province South-West, IBRA Bioregion Geraldton Sandplains, Avon Wheatbelt, Jarrah Forest, Mallee, Warren, Esperance or Swan Coastal Plain.