Festuca contracta
Encyclopedia
Festuca contracta, commonly known as Tufted Fescue or Land Tussac, is a species
of true grass (Poaceae
). It is native to many subantarctic
islands in, and the coasts bordering, the Southern Ocean
. The specific epithet comes from the Latin contractus (compressed or contracted), with reference to the inflorescence
.
30–120 mm in length. The spikelets are about 12 mm long, including the awn
s. The glumes have a strong mid-nerve, and are scabrous near the tip. The anthers are about 0.5 mm long. It flowers from October to January.
, South Georgia, the Kerguelen
and Falkland Islands
, as well as to Tierra del Fuego
and Patagonia
. On Macquarie it is common in peat
y areas, from the coast to at least 350 m above sea level.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of true grass (Poaceae
Poaceae
The Poaceae is a large and nearly ubiquitous family of flowering plants. Members of this family are commonly called grasses, although the term "grass" is also applied to plants that are not in the Poaceae lineage, including the rushes and sedges...
). It is native to many subantarctic
Subantarctic
The Subantarctic is a region in the southern hemisphere, located immediately north of the Antarctic region. This translates roughly to a latitude of between 46° – 60° south of the Equator. The subantarctic region includes many islands in the southern parts of the Indian Ocean, Atlantic Ocean and...
islands in, and the coasts bordering, the Southern Ocean
Southern Ocean
The Southern Ocean comprises the southernmost waters of the World Ocean, generally taken to be south of 60°S latitude and encircling Antarctica. It is usually regarded as the fourth-largest of the five principal oceanic divisions...
. The specific epithet comes from the Latin contractus (compressed or contracted), with reference to the inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
.
Description
Festuca contracta is an erect, stiff-tufted, dense, blue-green grass that grows to 80–400 mm in height. It has ridged culms and a contracted paniclePanicle
A panicle is a compound raceme, a loose, much-branched indeterminate inflorescence with pedicellate flowers attached along the secondary branches; in other words, a branched cluster of flowers in which the branches are racemes....
30–120 mm in length. The spikelets are about 12 mm long, including the awn
Awn
In botany, an awn is either a hair- or bristle-like appendage on a larger structure, or in the case of the Asteraceae, a stiff needle-like element of the pappus....
s. The glumes have a strong mid-nerve, and are scabrous near the tip. The anthers are about 0.5 mm long. It flowers from October to January.
Distribution and habitat
The plant is native to Macquarie IslandMacquarie Island
Macquarie Island lies in the southwest corner of the Pacific Ocean, about half-way between New Zealand and Antarctica, at 54°30S, 158°57E. Politically, it has formed part of the Australian state of Tasmania since 1900 and became a Tasmanian State Reserve in 1978. In 1997 it became a world heritage...
, South Georgia, the Kerguelen
Kerguelen Islands
The Kerguelen Islands , also known as the Desolation Islands, are a group of islands in the southern Indian Ocean constituting the emerged part of the otherwise submerged Kerguelen Plateau. The islands, along with Adélie Land, the Crozet Islands and the Amsterdam and Saint Paul Islands are part of...
and Falkland Islands
Falkland Islands
The Falkland Islands are an archipelago in the South Atlantic Ocean, located about from the coast of mainland South America. The archipelago consists of East Falkland, West Falkland and 776 lesser islands. The capital, Stanley, is on East Falkland...
, as well as to Tierra del Fuego
Tierra del Fuego
Tierra del Fuego is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of a main island Isla Grande de Tierra del Fuego divided between Chile and Argentina with an area of , and a group of smaller islands including Cape...
and Patagonia
Patagonia
Patagonia is a region located in Argentina and Chile, integrating the southernmost section of the Andes mountains to the southwest towards the Pacific ocean and from the east of the cordillera to the valleys it follows south through Colorado River towards Carmen de Patagones in the Atlantic Ocean...
. On Macquarie it is common in peat
Peat
Peat is an accumulation of partially decayed vegetation matter or histosol. Peat forms in wetland bogs, moors, muskegs, pocosins, mires, and peat swamp forests. Peat is harvested as an important source of fuel in certain parts of the world...
y areas, from the coast to at least 350 m above sea level.