Calothamnus scabridus

Calothamnus scabridus

Priority Two — Poorly Known Taxa (DEC)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Calothamnus
Species:
C. scabridus
Binomial name
Calothamnus scabridus
Synonyms

Melaleuca scabrida (A.S.George) Craven & R.D.Edwards

Calothamnus scabridus is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub with needle-shaped, prickly leaves and red flowers with four stamen bundles. (In 2014 Craven, Edwards and Cowley proposed that the species be renamed Melaleuca rosea.)[1]

Description

Calothamnus scabridus is an erect shrub growing to a height of about 1.5 metres (5 ft). Its leaves are needle-like, mostly 20–70 millimetres (0.8–3 in) long and 0.8–1.0 millimetre (0.03–0.04 in) wide, have a rough surface, are circular in cross section and taper to a sharp, prickly point.[2]

The flowers have 4 sepals and 4 petals and are in small groups between the older leaves or on old leafless wood. The flower cup (the hypanthium) is at least partly buried in the corky bark. The stamens are a shade of pink to bright red and are arranged in 4 claw-like bundles, each about 23–28 millimetres (0.9–1 in) long. The petals are 6–7 millimetres (0.2–0.3 in) long. Flowering occurs from October to December and is followed by fruits which are smooth, woody, roughly spherical capsules, 3–4 millimetres (0.1–0.2 in) long.[2]

Taxonomy and naming

Calothamnus scabridus was first formally described in 2010 by Alex George in Nuytsia from a specimen found near Manjimup.[2][3] The specific epithet (scabridus) is a reference to the rough surface of the leaves.[2]

Distribution and habitat

Calothamnus scabridus occurs north of Denmark in the Jarrah Forest biogeographic region[4] where it grows in loamy soil derived from granite.[2]

Conservation

Calothamnus scabridus is classified as "Priority Two" by the Western Australian government department of parks and wildlife[4] meaning that it is poorly known from a few locations, some of which are in reserves.[5]

References

  1. ^ Craven, Lyn A.; Edwards, Robert D.; Cowley, Kirsten J. (30 June 2014). "New combinations and names in Melaleuca (Myrtaceae)". Taxon. 63 (3): 667. doi:10.12705/633.38.
  2. ^ a b c d e George, Alex S. (2010). "Calothamnus (Myrtaceae): precursor paper to Flora of Australia" (PDF). Nuytsia. 20: 196–198. Retrieved 4 August 2015.
  3. ^ "Calothamnus scabridus". APNI. Retrieved 4 August 2015.
  4. ^ a b "Calothamnus scabridus". FloraBase. Retrieved 4 August 2015.
  5. ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 28 October 2019.

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