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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Monday, 2 March 2026 +08:00.

Sida cleisocalyx F.Muell.

Reference
Fragm. (Mueller) 10:73 (1876)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Sprawling shrub, to 0.3 m high, bladdery calyx. Sand. Stony rises, alluvial plains.

Amanda Spooner, Descriptive Catalogue, 29 June 1999

Scientific Description

Herb or shrub, with hairy stems. Leaves 15-40 mm long, 8-14 mm wide, not lobed; margins entire; hairy, with stellate hairswith scales absent, Sessile glands absent; stipules present and persistent to older leaves or present but early deciduous (only visible on youngest leaves). Fruits indehiscent and splitting into sections (schizocarps), length-width ratio more or less as long as wide, hairs or scales present, simple hairs (without tubercle bases) absent, stellate hairs present, Sessile glands absent, tubercle-based simple hairs absent, gland-tipped hairs absent, 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 1. Distribution Botanical Province Eremaean, IBRA Bioregion Tanami.

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

Distribution

IBRA Regions
Ord Victoria Plain, Tanami.
IBRA Subregions
South Kimberley Interzone, Tanami Desert.
Local Government Areas (LGAs)
Halls Creek.