''Banksia arborea'', commonly known as Yilgarn dryandra,
is a species of tree that is
endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to Western Australia. It has serrated, sharply pointed leaves, and yellow flowers and is found inland north of
Southern Cross
CRUX is a lightweight x86-64 Linux distribution targeted at experienced Linux users and delivered by a tar.gz-based package system with BSD-style initscripts. It is not based on any other Linux distribution. It also utilizes a ports system to ...
.
Description
''Banksia arborea'' is a tree that typically grows to a height of and has a thick trunk. Its leaves are elliptical to lance-shaped, long, wide and serrated with up to six sharply pointed triangular teeth on each side. The flower spikes are borne on the ends of branches and are composed of between 110 and 180 individual flowers. The
perianth
The perianth (perigonium, perigon or perigone in monocots) is the non-reproductive part of the flower. It is a structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals) or tepal ...
is long and yellow with shaggy hairs. Flowering mainly occurs between March and May, or in September or October and the fruit is an egg-shaped
follicle long that opens when mature.
Taxonomy and naming
Yilgarn dryandra was first formally described in 1964 by
Charles Gardner who gave it the name ''Dryandra arborea'' in the ''
Journal of the Royal Society of Western Australia'' from specimens he collected on hills near
Koolyanobbing.
In 2007,
Austin Mast
Austin R. Mast is a research botanist. Born in 1972, he obtained a Ph.D. from the University of Wisconsin–Madison in 2000. He is currently a professor within the Department of Biological Science at Florida State University (FSU), and has been ...
and
Kevin Thiele
Kevin R. Thiele is currently an adjunct associate professor at the University of Western Australia and the director of Taxonomy Australia. He was the curator of the Western Australian Herbarium from 2006 to 2015. His research interests include ...
changed the name to ''Banksia arborea''.
The
specific epithet
In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...
(''arborea'') is a
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
word meaning "tree-like".
Distribution and habitat
''Banksia arborea'' grows between ironstone rocks in open shrubland on hills north of Southern Cross.
Conservation status
This banksia is classified as "
Priority Four" by the Government of Western Australia
Department of Parks and Wildlife,
meaning that is rare or near threatened.
Ecology
An assessment of the potential impact of
climate change
Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
on this species found that its range is likely to contract by between 50% and 80% by 2080, depending on the severity of the change.
References
{{Taxonbar, from1=Q51042828, from2=Q4856547
arborea
Arborea is a town and ''comune'' in the province of Oristano, Sardinia, Italy, whose economy is largely based on agriculture and cattle breeding with production of vegetables, rice, fruit and milk (notably the local milk product Arborea).
Histo ...
Endemic flora of Western Australia
Eudicots of Western Australia
Plants described in 1964
Taxa named by Charles Gardner