Eucalyptus phaenophylla

Eucalyptus phaenophylla, also known as common southern mallee,[2] is a species of mallee that is endemic to Western Australia. It has smooth bark, linear to narrow lance-shaped or narrow elliptical adult leaves, flower buds in groups of up to thirteen, pale lemon-coloured flowers and barrel-shaped, cylindrical or conical fruit.

Common southern mallee
Flower buds of Eucalyptus phaenophylla
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. phaenophylla
Binomial name
Eucalyptus phaenophylla
fruit

Description

Eucalyptus phaenophylla is a mallee that typically grows to a height of 1 to 6 metres (3 to 20 ft) and forms a lignotuber. It has smooth grey to brownish bark that is shed in ribbons and sometimes accumulates near the base. Adult leaves are linear to narrow lance-shaped or narrow elliptical, the same shade of glossy green on both sides, 45–80 mm (1.8–3.1 in) long and 7–16 mm (0.28–0.63 in) wide, tapering to a petiole 5–12 mm (0.20–0.47 in) long. The flower buds are arranged in leaf axils in groups of up to thirteen on an unbranched peduncle 6–18 mm (0.24–0.71 in) long, the individual buds on pedicels 2–5 mm (0.079–0.197 in) long. Mature buds are spindle-shaped, 13–19 mm (0.51–0.75 in) long and 3–4 mm (0.12–0.16 in) wide with a horn-shaped operculum that is narrower than, and twice as long as the floral cup. Flowering occurs from January to March or from September to November and the flowers are pale lemon-yellow. The fruit is a woody, barrel-shaped, cylindrical or conical capsule 5–9 mm (0.20–0.35 in) long and 5–7 mm (0.20–0.28 in) wide with the valves at rim level.[2][3][4]

Taxonomy

Eucalyptus phaenophylla was first formally described in 1991 by Ian Brooker and Stephen Hopper in the journal Nuytsia, from material that Brooker collected from near the road between Nyabing and Pingrup in 1988.[4][5] The specific epithet (phaenophylla) is from ancient Greek meaning "shining" and "-leaved".[6]

In the same paper, Brooker and Hopper described two subspecies and the names have been accepted by the Australian Plant Census:

  • Eucalyptus phaenophylla subsp. interjacens Brooker & Hopper[7] that has a more straggly habit, larger flower buds than subspecies phaenophylla and an operculum that is about the same width as the floral cap at their join;[4]
  • Eucalyptus phaenophylla Brooker & Hopper subsp. phaenophylla.[8]

Distribution and habitat

Common southern mallee is found on gently undulating sand plains, breakaways and ridges between Wickepin and the Ravensthorpe Range, where it grows in species-rich mallee communities.[3][4]

Conservation status

This eucalypt is classified as "not threatened" in Western Australia by the Western Australian Government Department of Parks and Wildlife.[2]

See also

References
  1. "Eucalyptus phaenophylla". Australian Plant Census. Retrieved 30 November 2019.
  2. "Eucalyptus phaenophylla". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. "Eucalyptus phaenophylla subsp. phanaeophylla". Euclis: Centre for Australian National Biodiversity Research. Retrieved 30 May 2020.
  4. Brooker, M. Ian H.; Hopper, Stephen D. (1991). "A taxonomic revision of Eucalyptus wandoo, E. redunce and allied species (Eucalyptus series Levispermae Maiden - Myrtaceae) in Western Australia". Nuytsia. 8 (1): 76–82. Retrieved 30 November 2019.
  5. "Eucalyptus phanaeophylla". APNI. Retrieved 30 November 2019.
  6. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 275. ISBN 9780958034180.
  7. "Eucalyptus phaenophylla subsp. interjacens". Australian Plant Census. Retrieved 30 November 2019.
  8. "Eucalyptus phaenophylla subsp. phaenophylla". Australian Plant Census. Retrieved 30 November 2019.
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