Eucalyptus resinifera

Red Mahogany, Red Messmate

Family: Myrtaceae

A tree, growing to 45 m high, forming a lignotuber.

It is found in coastal areas from Nowra in New South Wales to Gladstone in Queensland. It grows in forest on flats, valleys and gentle slopes, preferring soils of medium to high fertility but is also found on sandstone, especially in Sydney. It forms a co-dominance of many vegetation communities in NSW.

Bark is rough, stringy or fibrous, reddish brown in long strips on the trunk and branches. The bark persists to the branch tips.

Juvenile / coppicing regrowth is dull green and lance-shaped (lanceolate) leaves that are paler on the lower surface, to 160 mm long and to 45 mm wide.

Adult leaves are arranged alternately, dark, glossy green on the upper surface, and much paler below, lance-shaped, to 180 mm long and to about 40 mm wide, tapering to a petiole to 25 mm long and with a fine, long point. The leaves have prominent parallel secondary venation (transverse) (a useful identification feature).

The flower buds are arranged in leaf axils in groups (umbellasters) of seven, nine or eleven; the individual buds on pedicels to 8 mm long. Mature buds are oval to spindle-shaped, to 16 mm long and to 7 mm wide with a conical, horn-shaped or beaked operculum / calyptra (a useful identification feature).

Flowers occur in December and are white.

The capsule is hemispherical, conical or cup-shaped to 8 mm long and 6 to 10 mm wide with the valves protruding strongly (exserted) (a useful identification feature) when combined with all other above features.

In the garden

A nice specimen and tree. Has broad horizontal leaves which may make it a nice shade tree. Can be grown on sandy and other soils reliably.

Not suited to small residential gardens. Makes a nice tree in a large open space and or landscaped bed.

A koala food tree. This species is one of 27 more common Eucalypt and Corymbia plants eaten by them.

Eucalypts can suffer problems from, caterpillars, leaf eating beetles, psyllids and borers to name a few. In undisturbed conditions, the numbers of eucalypt-feeding insects and their predators and parasites are in balance, so that they rarely cause tree death and most trees quickly recover from attack. In a home situation nature can get out of balance.

Propagation

Eucalyptus can be propagated by seeds which is most common method or grafting.
Cuttings are difficult to start, but can be used in some species.

For further information refer to: http://anpsa.org.au/APOL2007/sep07-s1.html

Other information

Eucalyptus is one of three similar genera that are commonly referred to as “eucalypts”, the others being Corymbia and Angophora.

There are two recognised subspecies:
Eucalyptus resinifera subsp. resinifera
• Eucalyptus resinifera subsp. hemilampra
These differ in the length of the calyptra. The latter subspecies is only found on the North Coast of NSW.

The timber of red mahogany is well regarded for its high quality, being very hard and heavy, and having dark-red heartwood. It has multiple uses including flooring, panelling, cladding, boat building, railroad ties and general construction.

Plants regenerate from lignotuber and epicormic shoots after fire. Will also regenerate from seed.

Eucalyptus – from Greek, eu, “well” or “true” and calyptus, referring to the calyptra (καλύπτρo) or operculum, which is a bud cap or covering which covers the developing flowers. The calyptra is a fusion of petals and/or sepals and is shed when the flower opens, leaving a flower with many stamens (staminate) surrounding one female part (carpel).
resinifera – from the Latin resiniferous meaning “resin-bearing”. However, botanists have noted it does not produce much resin compared to other eucalypts.

“Field Guide to Eucalypts Vol 1 South Eastern Australia’ M.I.H.Brooker and D.A.Kleining. Blooming Books.
https://en.wikipedia.org/wiki/Eucalyptus_resinifera
https://en.wikipedia.org/wiki/Eucalyptus
https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Eucalyptus~resinifera~subsp.+hemilampra

By Jeff Howes