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''Adenanthos pungens'', the spiky adenanthos, is a species of shrub in the family
''Adenanthos pungens'', the spiky adenanthos, is a species of shrub in the family Proteaceae
The Proteaceae form a family (biology), family of flowering plants predominantly distributed in the Southern Hemisphere. The family comprises 83 genus, genera with about 1,660 known species. Australia and South Africa have the greatest concentr ...
. It is endemic to the south-west
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A ''compass rose'' is primarily composed of four cardinal directions—north, east, south, and west—each ...
of Western Australia
Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...
.
Description
The species may be prostrate or erect in habit. The stiff, prickly and terete leaves are 30 mm in length and 1 to 2 mm in diameter. The flowers appear in clusters at the ends of the branchlets. These have a 30 mm long perianth which is either pale pink and cream or deeper pink. Styles are about 40 mm long, with or without hairs at the tips. The species was first formally described in 1845 in ''Plantae Preissianae
''Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali annis 1838-1841 collegit Ludovicus Preiss'', more commonly known as ''Plantae preissianae'', is a book written by Johann Georg Christian Le ...
'' by Carl Meissner
Carl Daniel Friedrich Meissner (1 November 1800 – 2 May 1874) was a Swiss botanist.
Biography
Born in Bern, Switzerland on 1 November 1800, he was christened Meisner but later changed the spelling of his name to Meissner. For most of his 40 ...
.
Subspecies
There are two recognisedsubspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...
:
*''A. pungens'' subsp. ''effusus'' - erect habit with dark pink flowers.
*''A. pungens'' subsp. ''pungens'' - prostrate habit with pale pink flowers.
Both subspecies are highly susceptible to ''Phytophthora cinnamomi
''Phytophthora cinnamomi'', also known as cinnamon fungus, is a soil-borne water mould that produces an infection which causes a condition in plants variously called "dieback", "root rot", or (in certain '' Castanea'' species), "ink disease".
O ...
'' dieback.
References
External links
* * * pungens Endemic flora of Southwest Australia Eudicots of Western Australia Taxa named by Carl Meissner {{proteaceae-stub