Eucalyptus macrorhyncha

Location & distribution maps

Phylogeny & links to associated information:

Wikipedia links:       Angiosperms > Eudicots > Rosids  >  Myrtaceae > Eucalyptus macrorhyncha

Other links:     

Plant  information

Common name:         Red Stringybark

• The Wiradjuri people of NSW use the name gundhay for the species

Conservation status: Least concern

• It is listed as a least concern species with the International Union for the Conservation of Nature as it is spread over a broad geographic range 

• It has an estimated extent of occurrence of 703 000 km2 and an estimated area of occupancy of 2,228 km2 

• Although it is also noted that it has a severely fragmented population that is in decline

Etymology:   

• The name Eucalyptus is from the Ancient Greek words eu meaning 'good'and kalypto meaning '(I) cover, conceal, hide', referring to the operculum covering the flower buds

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Flowers:                  

• The flower buds are arranged in groups of seven, nine or eleven in leaf axils on an unbranched peduncle 7–18 mm long, the individual buds on pedicels 4–6 mm long

• Mature buds are diamond-shaped, 5–9 mm long and 4–5 mm wide with a beaked operculum

• Flowering occurs between February and July and the flowers are white

Fruit:                         

• The fruit is a woody hemispherical or shortened spherical capsule 

• 3–7 mm long and 6–12 mm wide with the valves protruding above the rim of the fruit

Leaves:         

• Young plants and coppice regrowth have egg-shaped leaves 25–105 mm long and 20–52 mm wide

• Adult leaves are lance-shaped to curved, the same dull to glossy green colour on both sides, 75–140 mm long and 12–38 mm wide on a petiole 7–20 mm long

Stem & branches: 

• It has rough, stringy, grey to reddish brown bark on the trunk and branches

Roots:         

Habit:        

• A medium-sized tree that typically grows to a height of 12–35 m and forms a lignotuber

Habitat:   

Distribution:                  

• Endemic to eastern Australia

• On ranges and tablelands of NSW, the ACT and Victoria, with a small, disjunct population in the Spring Gully Conservation Park south-west of Clare in South Australia

Species:                     

• World:           

• Australia:     

Additional notes:     

• Near Bundarra and Barraba, this species is difficult to distinguish from E. laevopinea

• Taxonomy and naming

  • Eucalyptus macrorhyncha was first formally described in 1867 by George Bentham 

  • This was based on specimens collected by Frederick Adamson and by Ferdinand von Mueller who gave the species its name and wrote an unpublished description

  • The formal description was published in Flora Australiensis

  • In 1973, Lawrie Johnson and Donald Blaxell changed the name of Eucalyptus cannonii to E. macrorhyncha subsp. cannonii and the names of the two subspecies are accepted by the Australian Plant Census:

    • Eucalyptus macrorhyncha subsp. cannonii has larger buds and wider fruit with more protruding valves than subspecies macrorhyncha

    • Eucalyptus macrorhyncha subsp. macrorhyncha

Sources of information:

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