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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 Conservation listings displayed on Florabase may also be out of date.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.

The notice period started at 12:00 pm on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Friday, 1 January 2027 +08:00.

Lawrencia helmsii (F.Muell. & Tate) Lander
Dunna Dunna

Reference
Nuytsia 5:252 (1985)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect, cactus-like shrub, (0.1-)0.3-1.5 m high. Fl. yellow-green, Jul to Dec. Sandy soils, clay. Gypsum & limestone ridges, near salt lakes.

Grazyna Paczkowska, Descriptive Catalogue, 23 September 1996
Image

Scientific Description

Shrub, with hairy stems. Leaves 2-7 mm long, 1-3 mm wide, not lobed; margins entire; hairywith scales scales, Sessile glands absent; stipules present and persistent to older leaves, 1-3 mm long. Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel absent (flower sessile). Epicalyx (extra segments or 'bracteoles' immediately below the calyx) absent. Calyx 1.5-5 mm long, the lobes fused half or more of their length, Sessile glands absent, simple hairs (without tubercle bases) absent, stellate hairs absent, tubercle-based simple hairs absent, gland-tipped hairs absent, scales scales present, Terminal appendages absent, number of ribs absent. Corolla yellow or green, 1-5 mm long, glabrous. Indumentum (outside) Sessile glands absent. Stamens many, united and arising from a staminal tube around the style; filaments present, 0.5-1 mm long; anthers 0.5-1 mm long, indumentum absent (anthers glabrous). Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous); style 1, 0.5-3 mm long, with one or numerous style branches or lobes, mostly glabrous, wing absent. Flowering time July, August, September, October, November or December. Distribution Botanical Province Eremaean, IBRA Bioregion Pilbara, Gascoyne, Little Sandy Desert, Yalgoo, Murchison and Coolgardie.

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

Distribution

IBRA Regions
Coolgardie, Gascoyne, Little Sandy Desert, Murchison, Pilbara, Yalgoo.
IBRA Subregions
Carnegie, Eastern Goldfield, Eastern Murchison, Fortescue, Tallering, Trainor, Western Murchison.
Local Government Areas (LGAs)
Ashburton, Coolgardie, Cue, East Pilbara, Kalgoorlie-Boulder, Laverton, Leonora, Meekatharra, Menzies, Sandstone, Wiluna, Yalgoo.