Calytrix warburtonensis

Calytrix warburtonensis
Conservation status
Priority Two — Poorly Known Taxa (DEC)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Myrtaceae
Genus:	Calytrix
Species:	C. warburtonensis
Binomial name
Calytrix warburtonensis Craven [1]

Calytrix warburtonensis is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to eastern inland areas of Western Australia. It is a glabrous shrub with linear, lance-shaped or egg-shaped leaves with the narrower end towards the base, and white star-shaped flowers with 23 to 28 stamens in a single row.

Description

Calytrix warburtonensis is a glabrous shrub that typically grows to a height of up to 60 cm (24 in). Its leaves are linear, lance-shaped to egg-shaped with the narrower end towards the base, sometimes almost round, 1–3 mm (0.039–0.118 in) long and 0.5–1 mm (0.020–0.039 in) wide on a petiole 0.2–0.75 mm (0.0079–0.0295 in) long, with stipules up to 0.5 mm (0.020 in) long at the base of the petiole. The flowers are borne singly or in small groups on a peduncle 2.5–3.0 mm (0.098–0.118 in) long. The bracteoles are mostly free from each other, egg-shaped with the narrower end towards the base, 2.5 mm (0.098 in) long. The floral tube is 11–15 mm (0.43–0.59 in) long and has ten ribs. The sepals are elliptic to egg-shaped with the narrower end towards the base, about 2 mm (0.079 in) long wide with an awn up to 16 mm (0.63 in) long. The petals are white, narrowly elliptic to elliptic, 5.5–7 mm (0.22–0.28 in) long, 2.0–2.5 mm (0.079–0.098 in) wide and there are about 23 to 28 stamens in a single row, the filaments white 2.0–7.5 mm (0.079–0.295 in) long. Flowering has been recorded in September and October. ^{[2] [3]}

Taxonomy

Calytrix warburtonensis was first formally described in 1987 by Lyndley Craven in the journal Brunonia from specimens collected by Alex George at the Winduldurra Rockhole, 80 km (50 mi) south-west of Warburton in 1966. ^[2] The specific epithet (warburtonensis) means 'native of Warburton'. ^[4]

Distribution and habitat

This species of Calytrix grows in an open, gravelly area on rocky hills, slopes and breakaways, in the Warburton Range district in the north-west of the Gibson Desert and Great Victoria Desert bioregions of inland Western Australia. ^{[2] [3]}

Conservation status

Calytrix warburtonensis is listed as "Priority Two" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, ^[3] meaning that it is poorly known and from one or a few locations. ^[5]

References

1. "Calytrix warburtonensis". Plants of the World Online. Retrieved 14 March 2025.
2. Craven, Lyndley (1987). "A taxonomic revision of Calytrix Labill. (Myrtaceae)". Brunonia: 34–36.
3. "Calytrix warburtonensis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
4. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 338. ISBN   9780958034180.
5. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Biodiversity, Conservation and Attractions. Retrieved 15 March 2025.