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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not reflected in Florabase, herbarium collections, or in the census. We are hoping to be able to reinstate services around December 15; we will provide an update at that time.

The notice period started at 9:00 am on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Monday, 15 December 2025 +08:00.

Decaschistia byrnesii subsp. lavandulacea Fryxell

Reference
Austral.J.Bot. 22:189 (1974)
Conservation Code
Priority Three
Naturalised Status
Native to Western Australia
Name Status
Current

Shrub, to 2 m high. Fl. blue-purple, May to Jun. Sand, alluvium, laterite. Stony hillsides, sandstone outcrops, coastal areas.

Grazyna Paczkowska, Descriptive Catalogue, 19 September 1996

Scientific Description

Herb or shrub, with hairy stems. Leaves 40-150 mm long, 70-100 mm wide, not lobed or tripartitely lobed, simply (once-)lobed; margins entire; hairy, with Simple hairs (without tubercle bases), with stellate hairswith scales absent, Sessile glands absent; stipules present but early deciduous (only visible on youngest leaves). Perianth clearly of two whorls (calyx and corolla), the corolla obvious and prominent. Pedicel present, 10-15 mm long; indumentum present, with simple hairs, with stellate hairs present, with scales absent. Epicalyx (extra segments or 'bracteoles' immediately below the calyx) present, 10-12 mm long, the lobes free, indumentum present, simple hairs (without tubercle bases) present, stellate hairs present, gland-tipped hairs absentwith scales absent, Sessile glands absent. Calyx green, 13-15 mm long, the lobes fused less than half their length, Sessile glands absent, simple hairs (without tubercle bases) present, stellate hairs present, scales absent, Terminal appendages absent, number of ribs absent. Corolla blue or purple, 35-40 mm long, glabrous. Indumentum (outside) Sessile glands absent. Staminodes absent, appendages absent. Ovary hairs and scales absent (ovary quite glabrous). Flowering time May or June. Distribution Botanical Province Northern, IBRA Bioregion North Kimberley. Conservation Code Priority Three (P3).

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

Distribution

IBRA Regions
Northern Kimberley.
IBRA Subregions
Mitchell.
Local Government Areas (LGAs)
Wyndham-East Kimberley.