''Eucalyptus × stoataptera'' is a small tree that is endemic to a small area on the south coast of Western Australia. It has a dense crown, smooth bark on the trunk and branches, glossy, oblong leaves, single flower buds 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, lemon-orange flowers, and fruit that are square in cross-section. It is a natural

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two dif ...

between ''

Eucalyptus stoatei ''Eucalyptus stoatei'', commonly known as scarlet pear gum or Stoate's mallee, is a tree that is native to a small area along the south coast of Western Australia. Description The tree will typically grow to a height of and has white or grey-b ...

'' and '' E. tetraptera''.

Description

''Eucalyptus × stoataptera'' is a tree that typically grows to a height . It has smooth dark grey and light grey bark on the trunk and branches. Adult leaves are arranged alternately, the same shade of glossy green on both sides, oblong with a long-pointed tip, 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 ...

. The flower buds are arranged singly in leaf axils on a downturned

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 becoming flattened near the

floral cup In angiosperms, a hypanthium or floral cup is a structure where basal portions of the calyx, the corolla, and the stamens form a cup-shaped tube. It is sometimes called a floral tube, a term that is also used for corolla tube and calyx tube. It ...

, the individual buds pendent on a very short

pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...

. Mature buds are red, square in cross-section with a wing on each corner, long and wide with a conical operculum. The fruit is a pendulous, woody, red capsule long and wide with a wing on each corner and up to five small ribs between each pair of wings.

Taxonomy and naming

''Eucalyptus × stoataptera'' was first formally described in 1995 by Eleanor Marion Bennett in the journal '' Nuytsia'' from specimens she collected between

Ravensthorpe Ravensthorpe may refer to any of the following places. England *Ravensthorpe, Dewsbury in West Yorkshire **Ravensthorpe railway station, Dewsbury *Ravensthorpe, Northamptonshire *Ravensthorpe, Peterborough in Cambridgeshire *Ravensthorpe, an histor ...

and Hopetoun in 1991. The

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 ...

is a combination of the names of its parents, '' E. stoatei'' and '' E. tetraptera''.

Distribution and habitat

This eucalypt grows in low to medium mallee shrubland with the parent species and '' E. kessellii'' in the Esperance Plains

biogeographic region An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...

References

{{DEFAULTSORT:Eucalyptus stoataptera Eucalypts of Western Australia stoataptera Myrtales of Australia Taxa named by William Blakely Plants described in 1995 Plant nothospecies