Ptilotus andersonii R.W.Davis
Nuytsia 25:195-196 (2015)

Conservation Code: Priority One
Naturalised Status: Native to Western Australia
Name Status: Current

Distribution

Beard’s Provinces: Eremaean Province.

IBRA Regions: Yalgoo.

IBRA Subregions: Tallering.

Local Government Areas (LGAs): Yalgoo.

Scientific Description
Robert Davis, Thursday 22 December 2016

Prostrate perennial herbs to 5 cm high. Stems with dense, spreading, verticillate hairs to 2.5 mm long. Basal leaves spathulate to oblanceolate, 30–45 mm long, 3–10 mm wide, with sparse, spreading, verticillate hairs to 1.5 mm long; apex rounded or sometimes mucronate. Cauline leaves alternate, flat, oblanceolate, obovate to elliptical, with sparse to dense, spreading, verticillate hairs to 2 mm long; apex mucronate. Inflorescences terminal, solitary or more commonly in loose panicles, pink, ovoid, 10–20 mm long, 15–23 mm diam. Bracts brown, 6–7 mm long, lanceolate to narrowly ovate, with sparse, verticillate hairs; midrib obscure. Bracteoles light brown becoming translucent towards margins, 5.8–6.3 mm long, broadly ovate, with sparse, verticillate hairs; midrib obvious. Flowers pedicellate, incurved. Outer tepals green becoming pink towards the apex, narrowly oblanceolate, concave, flattening towards the apex, 8–10 mm long; outer surface hairy except at the apex with dense, spreading, verticillate hairs to 2.5 mm long; inner surface glabrous; apex broad, rounded to slightly mucronate, serrate. Inner tepals green becoming pink towards the apex, narrowly oblanceolate, concave, 7–9.5 mm long; outer surface hairy except at the apex with dense, spreading, verticillate hairs to 2.3 mm long; inner surface glabrous except for a basal tuft of hairs on the margins; apex slightly concave, attenuate, serrate. Staminal cup symmetrical, 1.1–1.4 mm long, glabrous; fertile stamens 2; filaments glabrous, incurved, dilating slightly towards base, 3.5–4.2 mm long. Staminodes 3, < 0.5 mm long. Ovary obconical, slightly gibbose, 1.4–1.6 mm long, 0.6–0.7 mm wide, glabrous; style curved, eccentrically fixed to ovary, 2.8–3.1 mm long. Seeds not observed.