Cullen leucanthum (F.Muell.) J.W.Grimes

Scientific Description

Genus Cullen. Form prostrate,spreading or scrambling. Habit shrub, spindly shrub (broom-like). Stems Indumentum glabrous, Pustules or glands present, 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 present. Length Leaf length 40-90. Width (entire leaves only) Leaf width NaN (?). Scale leaves length mm long NaN (?). Leaflets Number three, Arrangement pinnately arranged. Terminal leaflet Presence present, Stalk stalked. Indumentum Presence hairy, Type simple. Stipules Presence present and persistent to older leaves, Glands with glands (?) or without glands (?), Ribs ribbed (?) or ribless (?). Length Stipule length NaN (?). Bracteoles Presence absent, Indumentum hairy (?) or glabrous (?), Striation striate (?) or not striate (?). Length Bracteole length NaN (?). Pedicel Presence present, Indumentum hairy. Length Pedicel length 2-2.5. Calyx Pustules or glands present, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 3.5-4.5. Indumentum Presence hairy, Type with simple hairs. Corolla Colour patterning uniformly coloured, Colour (when uniformly coloured) white, Petal claws ( the narrow base of the petals absent. Length Corolla length 7-8. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length 7-7.5. Wings Auricles not auriculate. Length Wing length 5.5-6.2. Keel Auricles not auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 5.5-6.5. Stamens Number ten. Anthers anther length 0.2, Position at two different levels (filaments alternately long and short). Filaments Fusion united in an open sheath with one free stamen. Length Filament length 5-5.4. Ovary Placement stipitate. Indumentum Presence glabrous. Style Indumentum glabrous, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 5-6. Fruit Type indehiscent and splitting into sections (schizocarps), Constriction not constricted between the seeds, Compression round in cross-section, Placement stipitate, Beak not beaked. Length Fruit length NaN (?). Width Fruit width NaN (?). Indumentum Presence hairy (?) or glabrous (?), Indumentum type with simple hairs (?) or with glandular hairs (?). Flowering time April, May, June, July, August, September, October or November. Distribution Botanical Province Northern, Eremaean or South-West, IBRA Bioregion Pilbara, Carnarvon, Gascoyne, Little Sandy Desert, Murchison, Northern Kimberley, Victoria Bonaparte, Central Kimberley, Ord-Victorian-Plain, Dampierland, Coolgardie or Geraldton Sandplains.