Styphelia longissima

Styphelia longissima is a species of flowering plant in the heath family Ericaceae and is endemic to a few places in the south-west of Western Australia. It is an erect shrub with hairy young branchlets, stem-clasping, sharply-pointed, narrowly egg-shaped to narrowly elliptic leaves, and white, tube-shaped flowers.

Description
Styphelia longissima is an erect shrub with hairy young branchlets, that typically grows up to 70 cm high and 70 cm wide. Its leaves are stem-clasping, narrowly egg-shaped to narrowly elliptic, 7–13 mm long and 2.0–3.8 mm wide on a petiole 0.8–1.5 mm long. The end of the leaves is sharply-pointed and the edges usually have hairs 0.5–1.0 mm long. The flowers are arranged singly in leaf axils and are erect and sessile with egg-shaped to elliptic bracts 1.8–2.5 mm long and bracteoles 2.4–3.2 mm long and 1.5–2.0 mm wide. The sepals are narrowly egg-shaped to narrowly elliptic, 5.0–6.8 mm long and 1.4–1.8 mm wide and straw-coloured. The petals are white and joined at the base to form a tube 4.4–4.8 mm long and 2.5–3.0 mm wide, with lobes that are turned back and 3.2–4.0 mm long. Flowering occurs between May and July.

Taxonomy
Styphelia longissima was first formally described in 2017 by Michael Hislop and Caroline Puente-Lelievre in the journal Nuytsia from specimens collected north of Eneabba in 2004. The specific epithet (longissima) means "very long", referring to the point on the end of the leaf, and the hairs on the edges of the leaves and ovary.

Distribution and habitat
This styphelia grows in heath and open, low woodland on yellow sand in a small area near Eneabba in the Avon Wheatbelt and Geraldton Sandplains bioregions of south-western Western Australia.

Conservation status
Styphelia longissima is listed as "Threatened Flora (Declared Rare Flora — Extant)" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.