Seeds of South Australia
Lepidium monoplocoides (Cruciferae)
Winged Peppercress
List of species for Lepidium
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Seed collecting:
October to December
Herbarium region:
NRM region:
South Australian Murray-Darling Basin
IBRA region
Murray Scroll Belt (RIV06)Riverina
 Regionally Extinct   [possibly extinct]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Lepidium]
Name derivation:
Lepidium from the Greek 'lepis' meaning a scale; referring to the appearance of the fruits. Monoplocoides means resembling the genus Monoploca (from the Greek 'monos' meaning single and 'plokos' meaning folded), now a symonym of Lepidium.
Only a single record from near Berri on the Murray River in 1915 and it has not been collected since in South Australia. It grows in open, sparsely vegetated sites in a range of habitats on heavy clay or clay-loam soils, usually on sites that are seasonally flooded or prone to waterlogging. Also found in Queensland, New South Wales and Victoria.
Native. Presume extinct in South Australia. Presume extinct in Queensland. Rare in New South Wales and Victoria.
Plant description:
Small annual herb 20 cm tall. Leaves are narrowly linear, pinnate lobed or entire, to 10 cm long and 2 mm wide arranged along and at the base of stems. Inflorescence is an elongating spike with tiny green-brown flowers, petals inconspicuous or absent. Flowering between August and October.
Fruit type:
Brown broad-ovate to circular flat pod to 5.5 mm long and 4.5 mm wide, uniformly winged around the margin forming a deep narrow notch apex.
Embryo type:
Seed collecting:
Collect maturing pods those turning pale brown with hard seeds inside. Be gentle with the pods as they split open easily.
Seed cleaning:
Place the pods in a tray and cover with paper to prevent seeds from popping out and leave to dry for a week. Then rub the dried pods gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.