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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.

Ptilotus tetrandrus Benl

Reference
Nuytsia 2:232-235 (1978)
Conservation Code
Priority One
Naturalised Status
Native to Western Australia
Name Status
Current

Annual, herb, 0.15-0.3 m high. Fl. Oct. Loamy sand.

Grazyna Paczkowska, Descriptive Catalogue, 9 May 1996

Scientific Description

Annuals, stems several, more or less erect, glabrescent, with nodose hairs. Leaves present, 8-45 mm long, 1.5-5 mm wide, glabrescent, with nodose hairs; basal rosette absent; cauline leaves alternate. Spikes green or brown, cylindrical, solitary, with loosely arranged flowers. Bracts 3.5-4 mm long, coloured, glabrous, not awned or mucronate, with an obscure midrib. Bracteoles 2-2.5 mm long, colourless, glabrous, not awned or mucronate, with an obscure midrib. Outer tepals (4.5-)5.2-5.5(-6) mm long, entire. Inner tepals (4.1-)4.2-4.5(-5) mm long, with a basal tuft of hairs on inner face. Style (3.7-)4-4.5(-5) mm long, straight, obliquely fixed to ovary. Distribution: Eremaean Botanical Region; IBRA regions: Little Sandy Desert, Murchison.

R. Davis, 30 April 2019

Distribution

IBRA Regions
Avon Wheatbelt, Little Sandy Desert, Murchison.
IBRA Subregions
Eastern Murchison, Merredin, Trainor.
Local Government Areas (LGAs)
Leonora, Wiluna, Yalgoo.