Indicative distribution
The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas.
(
click here to see geographic restrictions).
The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Lobelia claviflora
Gazetted date:
24 Sep 2021
Profile last updated:
23 Feb 2024
Description
An annual (or possibly rarely a short-livedperennial) herb to c. 25 cm high, single-stemmed or occasionally with several stemsarising from base. Stems erect or ascending, glabrous, sometimes producingadventitious roots from lower nodes. Leaves linear 5–21 mm long, 0.4–3 mm wide, glabrous. Flowers bisexual, each initiallydeveloping in the axil of one leaf of a sub-opposite pair of distal leaves, so that a flower appears to be borne at every second node, pedicels 16–55 mm long, glabrous. Calyx lobes 1.5–2.5 mm long.Corolla weakly 2-lipped, 10–14 mm long; upper lip two-lobed, violet-blue; lower lipthree-lobed, the lobes basally fused for c. 2–3.5 mm above the sinus between the twolips, the fused part with a prominent central yellow zone and 3 deep purple, ?basallyfused broad bands, deep purple bands extending into the tube on the ventral side andcovered with dense club-shaped hairs; central lobe violet-blue distally, whiteproximally; lateral lobes mostly violet-blue but white proximally on the half adjacent tothe central lobe; tube 5–7 mm long Seeds subcylindrical to ovoid, 0.38–0.5 mm long, mid to dark brown.
Distribution
A short-lived, ephemeral semi-arid species that occurs nearCuttabri, south west of Wee Waa in north western NSW. It is currentlyknown from three sites that are no more than 5.5 km apart and located on private landin sedge-dominated wetlands occupying shallow basins on the Namoi River floodplain
Habitat and ecology
- Occurs in moist situations, ephemeral wetlands.
- Probably germinates opportunistically (with inundation).
- Flowering is reported from October, probably into summer, dependent on timing and extent of inundation.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Domestic stock degrades this species habitat by grazing and trampling leading to disturbance to the ground surface, vegetation, roots, and soil seed bank.
- Feral pigs degrade this species habitat by trampling and digging up the soil leading to disturbance to the ground surface, vegetation, roots, soil seed bank, and fauna habitats. Disruption of the soil seed bank affects future plant recruitment.
- Alteration of the water regime by farm dam / ground tank or levee bank construction causing disturbance to soil seed banks and disruption to the natural hydrology of the area, including eutrophication.
- Climate change causing longer and more severe droughts
- Invasion of exotic species such as grasses and Lippia
- Very little known of the species distribution
- The very restricted size and distribution of the population makes it susceptible to extinction.
Recovery strategies
Priority actions are the specific, practical things that must be done to recover a threatened species, population or ecological
community. The Office of Environment and Heritage has identified
0 priority actions
to help recover the Lobelia claviflora in New South Wales.
Activities to assist this species
- Control feral pigs in areas of known populations.
- Monitor health of populations and threats to guide management.
- Inform local landholders of species and how to manage it.
- Map all known populations
- Search for new populations in potential habitats
- Undertake appropriate weed control activities when necessary.
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