CR

Cycas glauca

Declining

Overview

Cycas glauca is a species of cycad endemic to the Lesser Sunda Islands of Indonesia. It occurs on Timor and Sumba islands.

Cycas glauca faces severe population decline primarily due to habitat destruction from urban development and agricultural expansion across its limited Queensland range. Collection pressure for horticultural trade has historically impacted wild populations, while altered fire regimes and invasive plant species continue to degrade remaining habitat quality. The species' extremely slow growth rate and limited reproductive capacity make recovery particularly challenging once populations are reduced.

Threat summary

Habitat

Cycas glauca inhabits open eucalyptus woodlands and coastal scrublands in southeastern Queensland, typically growing on sandy soils and rocky outcrops. The species occurs in both coastal and inland environments, often in areas with seasonal moisture availability and well-drained substrates.

Forest· majorMarine coastal/supratidal· major

Conservation measures underway

Species recoveryAwareness & communicationsLegislation

Other threatened species in CYCADACEAE

Cycas siamensisVU

Cycas siamensis

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VU

Cycas nathorstii

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EN

Cycas elephantipes

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VU

Cycas nongnoochiae

Declining

Threatened in Indonesia

EN

Speckle-faced Bent-toed Gecko

Cyrtodactylus psarops

Unknown
Acropora hemprichiiEN

Acropora hemprichii

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VU

Bacan Myzomela

Myzomela batjanensis

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VU

Hopea coriacea

Declining

Frequently asked questions

Why is Cycas glauca classified as Critically Endangered?
Cycas glauca is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Cycas glauca faces severe population decline primarily due to habitat destruction from urban development and agricultural expansion across its limited Queensland range. Collection pressure for horticultural trade has historically impacted wild populations, while altered fire regimes and invasive plant species continue to degrade remaining habitat quality. The species' extremely slow growth rate and limited reproductive capacity make recovery particularly challenging once populations are reduced.
Where does Cycas glauca live?
Cycas glauca occurs in Indonesia, and Timor-Leste. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Cycas glauca?
The main threats to Cycas glauca are 5.3, ai-1, ai-2, and ai-3. The full IUCN-classified threat record for this species is detailed on the species page.

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