VU

Stirling Range Coneflower

Isopogon baxteri

Declining

Overview

A member of the Proteaceae family, this shrub produces the stiff, needle-like foliage and cone-shaped flower heads characteristic of the genus Isopogon, with terminal flowerheads that give rise to hardened, cone-like seed structures after flowering. Like other Proteaceae, it likely relies on insect or bird pollinators and contributes to the structural diversity of the shrubland communities it inhabits, offering habitat and food resources for local invertebrate and vertebrate fauna.

The species is endemic to Western Australia, with its range centered on the Stirling Range and surrounding areas. It occupies shrubland habitat, a vegetation type typical of the biodiverse southwest Australian floristic region, often on nutrient-poor soils that support high levels of plant endemism.

The species is classified as Vulnerable, with a decreasing population trend. Two ongoing threats are recognized: encroachment and habitat conversion associated with annual and perennial non-timber crop agriculture, which reduces and fragments available shrubland habitat, and altered fire regimes, including both inappropriate fire frequency and fire suppression, which can disrupt the natural cycles of regeneration that many fire-adapted Proteaceae species depend on for seed release and recruitment.

Conservation attention for threatened flora in the Stirling Range region typically includes monitoring of known populations, habitat protection within reserve boundaries, and management of fire regimes to balance ecological needs with risk reduction. Restrictions on land clearing for agriculture in areas of conservation value also play a role in limiting further habitat loss.

The species' current trajectory reflects ongoing pressure from habitat modification and fire regime disruption. Continued population decline is expected in the absence of sustained habitat protection and fire management tailored to the species' regeneration requirements.

The Stirling Range Coneflower is threatened by the ongoing clearing or conversion of its native habitat for growing crops, which reduces the space available for it to grow in the wild. It also faces risks from fire, including both bushfires and the way fire is managed or suppressed in its habitat, which can disrupt the natural conditions this plant needs to survive and regenerate. Both of these threats are ongoing, suggesting the pressures on this species are currently stable rather than clearly increasing or decreasing.

Threat summary

Habitat

Shrubland· major

Conservation measures underway

Site/area protection

Frequently asked questions

Why is Stirling Range Coneflower classified as Vulnerable?
Stirling Range Coneflower is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Stirling Range Coneflower is threatened by the ongoing clearing or conversion of its native habitat for growing crops, which reduces the space available for it to grow in the wild. It also faces risks from fire, including both bushfires and the way fire is managed or suppressed in its habitat, which can disrupt the natural conditions this plant needs to survive and regenerate. Both of these threats are ongoing, suggesting the pressures on this species are currently stable rather than clearly increasing or decreasing.
Where does Stirling Range Coneflower live?
Stirling Range Coneflower occurs in Australia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Stirling Range Coneflower?
The main threats to Stirling Range Coneflower are 2.1, and 7.1. The full IUCN-classified threat record for this species is detailed on the species page.

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