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The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. Please reach out to us if you have any questions or concerns.

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Brachychiton obtusilobus Guymer

Reference
Austral.Syst.Bot. 1:254-255,Fig.25 (1989)
Conservation Code
Priority Four
Naturalised Status
Native to Western Australia
Name Status
Current

Tree, 3.5-6 m high. Fl. cream, Aug to Sep. Skeletal soils. Rocky limestone ranges, gorges, occasionally sandplains.

Grazyna Paczkowska, Descriptive Catalogue, 25 September 1996

Scientific Description

Tree, with glabrous stems. Leaves 90-210 mm long, 70-160 mm wide, tripartitely lobed, simply (once-)lobed; margins entire; hairs and scales absent (leaves quite glabrous); stipules present but early deciduous (only visible on youngest leaves). Calyx green. Fruits indehiscent and splitting into sections (schizocarps), length-width ratio at least 1.5 times as long as wide, mericarps smooth, hairs and scales absent; apex rounded; prickles absent (except perhaps a terminal awn); terminal awns or spines absent; calyx deciduous before maturity, not accrescent; carpels 5; seeds per loculus 2-4 or ≥5. Flowering time August or September. Distribution Botanical Province Eremaean, IBRA Bioregion Carnarvon. Conservation Code Priority Four (P4).

C. Hollister and K.R. Thiele, 11 August 2023

Distribution

IBRA Regions
Carnarvon.
IBRA Subregions
Cape Range.
Local Government Areas (LGAs)
Exmouth.