"After Ken R. Newbey, a prominent collector of Western Australian plants and the first person to collect this taxon."

Erect, open shrub 1–1.5 m high, with densely rusty-pubescent young stems. Leaves: lamina obovate to broadly obovate, 10–15 mm long, 6–8 mm wide, cuneate at base, flat or folded, apex obtuse to emarginate, ± recurved-apiculate, upper surface shortly simple-velvety or pubescent, lower surface densely rusty-villous; petiole 1–3 mm long; stipules triangular, 3–5 mm long, free. Inflorescences to 1 cm wide, with 5–15 flowers, subtended by whitish floral leaves. Flowers densely villous. Hypanthium tube 0.6–0.8 mm long, c. 1 mm diam. Sepals c. 0.9 mm long. Petals c. 0.6 mm long, distinctly clawed. Disc conspicuous. Ovary roof glabrous; style 1.4–1.5 mm long. Fruit 2.6–3 mm long. Seed 2–2.4 mm long.

Flowers September; fruits October.

Native.

Endemic to southwestern Western Australia, restricted to a small area near Bungalbin Hill NE of Southern Cross.

Grows in mallee-woodland.

W.A.: 3 km N of Bungalbin Hill, 6 Sept. 1989, R.J. Cranfield & P.J. Spencer 7773 (PERTH); c. 7.5 km NE of Bungablbin Hill, B.J. Lepschi 1984 (AD, BRI, CANB, MEL, NSW, PERTH).

Stenanthemum newbeyi  Rye, Nuytsia 10: 293 (1995). Type: Bungalbin Hill, W.A., 2 Jan. 1989, D.J. Pearson 559; holo: PERTH 1679538 n.v.

The taxon is related to Stenanthemum complicatum, which differs in having a densely hairy ovary summit and more hairy fruits. Stenanthemum stipulosum is also similar, but has smaller leaves with a dense indumentum of minute stellate hairs on the upper surface, as well as smaller flowers.

B.L. Rye, Nuytsia 10(2): 295, fig. 11A–C (1995).

Rye, B.L. (1995). New and priority taxa in the genera Cryptandra and Stenanthemum (Rhamnaceae) of Western Australia. Nuytsia 10(2): 255–305.

Rye, B.L. (2007). New species and keys for Cryptandra and Stenanthemum (Rhamnaceae) in Western Australia. Nuytsia 16(2): 325–384.

Published 11 May 2022.