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:
Murray
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.
Distribution:
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.
Status:
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:
Bent.
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.