''Eucalyptus repullulans'', commonly known as chrysoprase mallee,
[ is a species of mallee that is native to arid parts of Western Australia and the far north-west of South Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of between seven and thirteen, cream-coloured flowers and cup-shaped, cylindrical or conical fruit.
]
Description
''Eucalyptus repullulans'' is a slender-stemmed mallee that typically grows to a height of and forms a lignotuber. It has smooth pink and grey over cream bark that is shed in strips and ribbons. Young plants and coppice regrowth have glaucous
''Glaucous'' (, ) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the glaucous gull (''Larus hyperboreus''), glaucous-winged gull (''Larus glaucescens''), g ...
, egg-shaped leaves that are long and wide and petiolate
Petiole may refer to:
*Petiole (botany), the stalk of a leaf, attaching the blade to the stem
*Petiole (insect anatomy)
In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, a ...
. Adult leaves are slightly waxy, the same shade of dull blue-green on both sides, narrow lance-shaped to lance-shaped, long and wide on a petiole long. The flower buds are arranged in leaf axil
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, st ...
s in groups of seven, nine, eleven or thirteen on an unbranched peduncle Peduncle may refer to:
*Peduncle (botany), a stalk supporting an inflorescence, which is the part of the shoot of seed plants where flowers are formed
*Peduncle (anatomy), a stem, through which a mass of tissue is attached to a body
**Peduncle (art ...
long, the individual buds on pedicels
In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''.
Description
Pedicel refers to a structure connecting a single flower to its inflorescence. In the absenc ...
long. Mature buds are pear-shaped to cylindrical, sometimes glaucous, long and wide with a ribbed, conical to beaked operculum. Flowering has been recorded in May and the flowers are creamy white. The fruit is a woody, elongated cup-shaped, cylindrical or conical capsule with the valves near rim level. The seeds are a flattened oval shaped, reddish brown, about long and wide.
Taxonomy
''Eucalyptus repullulans'' was first formally described in 1997 by Dean Nicolle
270px, Dean Nicolle and '' Eucalyptus deanei''
Dean Nicolle (born 1974), is an Australian botanist, arborist and ecologist. He is widely recognised as the leading authority on the genus ''Eucalyptus''.
Nicolle was born in Adelaide, South Austr ...
in the journal '' Nuytsia'' from material he collected from the summit of Mount Nameless near Tom Price in 1994.specific epithet
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
(''repullulans'') is a Latin word meaning "sprouting again", in reference to the mallee habit of this species.[
This eucalypt belongs in subgenus ''Symphyomyrtus'' section ''Dumaria'' in a large sub-group, series ''Rufispermae'', composed of 37 described species and subspecies including '' E. kondininensis'', '' E. gypsophila'' and '' E. striaticalyx''.]
Distribution
Chrysoprase mallee occurs in the Pilbara region of Western Australia and the central ranges of far north western South Australia where it is found on mountain and hills slopes and summits. It grows in rocky skeletal soils often among outcrops of chrysoprase
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. The darker varieties of chry ...
.
See also
* List of ''Eucalyptus'' species
References
{{Taxonbar, from=Q15355189
Eucalypts of Western Australia
repullulans
Myrtales of Australia
Flora of South Australia
Plants described in 1997
Mallees (habit)