Leptosema macrocarpum (Benth.) Crisp

Scientific Description

Genus Leptosema. Form erect. Habit shrub, spindly shrub (broom-like). Stems Indumentum glabrous, Pustules or glands absent, Striation (stems ribbed) not striate, Cross section flattened or winged, Spiny on any part of plant not spiny. Leaves or phylloclades Presence absent or apparently so (reduced to scales), Position alternate, Leaves simple (?) or compound (?), Leaves or phylloclade continuous with stem 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 NaN (?). Width (entire leaves only) Leaf width NaN (?). Scale leaves length mm long 3-5.6. Indumentum Presence hairy, Type simple. Stipules Presence apparently absent even from the youngest leaves, Glands with glands (?) or without glands (?), Ribs ribbed (?) or ribless (?). Length Stipule length NaN (?). Bracteoles Presence present and persistent, Indumentum hairy, Striation not striate. Length Bracteole length 1.5-4. Pedicel Presence present, Indumentum hairy. Length Pedicel length 15-25. Calyx Pustules or glands absent, Ribs ribless, Enlarged in fruit not accrescent. Length Calyx length 20-25. Indumentum Presence hairy, Type with simple hairs. Corolla Colour patterning multicoloured, Colour (when multicoloured - choose one colour) red or brown, Colour (when multicoloured - choose a second colour) red or brown, Petal claws ( the narrow base of the petals absent. Length Corolla length 26-30. Indumentum Presence absent. Standard Indumentum glabrous, Auricles not auriculate. Length Standard length NaN (?). Wings Auricles not auriculate. Length Wing length 19-22. Keel Auricles auriculate, Indumentum glabrous, Beak not beaked. Length Keel length 25-30. Stamens Number ten. Anthers anther length 4.2-4.4, Position at two different levels (filaments alternately long and short). Filaments Fusion free (or united at the very base). Length Filament length 18-21. Ovary Placement sessile or subsessile. Indumentum Presence hairy or glandular. Style Indumentum hairy or glandular towards the base, Bearded ( with a tuft of hairs at apex ) not bearded, Apex terete. Length Style length 30-35. Fruit Type dehiscent (a pod or follicle), Constriction not constricted between the seeds, Compression flat or compressed, Placement sessile or subsessile, Beak not beaked. Length Fruit length 35-60. Width Fruit width 4-5. Indumentum Presence glabrous. Flowering time July, August or September. Distribution Botanical Province Eremaean or South-West, IBRA Bioregion Carnarvon, Yalgoo or Geraldton Sandplains.