Allocasuarina thuyoides

Location & distribution maps

Phylogeny & links to associated information

Wikipedia links:       Angiosperms > Eudicots > Rosids  > Fagales > Casuarinaceae > Allocasuarina  thuyoides

Other links:     

Common name:         Horned Sheoak

Conservation status: ...

Etymology:   

• The specific epithet (thuyoides) means "Thuja-like"

Flowers

• Male flowers are arranged in whorls of up to four 1–5 mm long on the ends of branchlets, the anthers 0.4–0.6 mm long

• Female cones are on slender peduncles 2–7 mm long, the mature cones shortly cylindrical to spherical, 8–20 mm long and 8–15 mm in diameter containing winged seeds 5.0–6.0 mm long

Fruit:                            

Leaves:         

• Rreduced to erect, scale-like teeth 0.4–0.5 mm long, arranged in whorls of five or six around the needle-like branchlet

Stem & branches: 

• Its branchlets are up to 30 mm long

•  The sections of branchlet between the leaf whorls are mostly 1–3 mm long, 0.3–0.5 mm wide

Roots:         

Habit:        

• A monoecious or dioecious, intricately-branched shrub that typically grows to a height of 0.3–2 m 

Habitat:   

• It grows in heath on laterite and sandplains

Distribution:                  

• Allocasuarina thuyoides is widely distributed in the south-west of Western Australia

• Occurring from the Murchison River south to Albany and east to Esperance

Additional notes:     

• Taxonomy

  • This sheoak was first formally described in 1845 by Friedrich Anton Wilhelm Miquel who gave it the name Casuarina thuyoides in Lehmann's Plantae Preissianae

  • It was reclassified in 1982 as Allocasuarina thuyoides by Lawrie Johnson in the Journal of the Adelaide Botanic Gardens

Sources of information:

•  https://en.wikipedia.org/wiki/Allocasuarina_thuyoides (2023)