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Scheuchzeriaceae

 
Scheuchzeriaceae

 
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Scheuchzeriaceae
 
 
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Scheuchzeria palustris (Rannoch-rush or Scheuchzeria), is a flowering plant
Flowering plant

The flowering plants or angiosperms are the most widespread group of Embryophytes. The flowering plants and the gymnosperms are the only extant groups of Spermatophyte....
, the only species in the genus Scheuchzeria, itself the only genus in the family
Family (biology)

In biological classification, family is a taxonomic rank. Exact details of formal nomenclature depend on the Nomenclature Codes which applies....
 Scheuchzeriaceae. In the APG II system
Angiosperm Phylogeny Group

The Angiosperm Phylogeny Group, or APG, refers to two international groups of systematic botany who came together to try to establish a consensus view of the taxonomy of flowering plants that would reflect new knowledge in angiosperm relationships based upon molecular systematics studies....
 this is placed in the order Alismatales
Alismatales

Alismatales is an order of flowering plants. The order will of necessity contain the family Alismataceae....
 of the monocots.

It is a herbaceous
Herbaceous

A herbaceous plant is a plant that has leaf and stem that die down at the end of the growing season to the soil level. A herbaceous plant may be Annual plant, Biennial plant or Perennial plant....
 perennial plant
Perennial plant

A perennial plant or perennial is a plant that lives for more than two years. When used by gardeners or horticulturalists, this term applies specifically to perennial herbaceous plants....
, native to cool temperate regions of the Northern Hemisphere
Northern Hemisphere

The Northern Hemisphere is the half of a planet that is north of the equator?the word sphere literally means 'half sphere'. It is also that half of the celestial sphere north of the celestial equator....
, where it grows in wet Sphagnum
Sphagnum

Sphagnum is a genus of between 151-350 Specie of mosses commonly called peat moss, due to its prevalence in peat bogs and mires. A distinction is made between sphagnum moss, the live moss growing on top of a peat bog, and sphagnum peat moss, the decaying matter underneath....
 peat bogs. It grows to 10-40 cm tall, with narrow linear leaves
Leaf

In botany, a leaf is an above-ground plant Organ specialized for photosynthesis. For this purpose, a leaf is typically flat and thin, to expose the cells containing chloroplast to light over a broad area, and to allow light to penetrate fully into the tissues....
 with a basal sheath.






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Scheuchzeria palustris (Rannoch-rush or Scheuchzeria), is a flowering plant
Flowering plant

The flowering plants or angiosperms are the most widespread group of Embryophytes. The flowering plants and the gymnosperms are the only extant groups of Spermatophyte....
, the only species in the genus Scheuchzeria, itself the only genus in the family
Family (biology)

In biological classification, family is a taxonomic rank. Exact details of formal nomenclature depend on the Nomenclature Codes which applies....
 Scheuchzeriaceae. In the APG II system
Angiosperm Phylogeny Group

The Angiosperm Phylogeny Group, or APG, refers to two international groups of systematic botany who came together to try to establish a consensus view of the taxonomy of flowering plants that would reflect new knowledge in angiosperm relationships based upon molecular systematics studies....
 this is placed in the order Alismatales
Alismatales

Alismatales is an order of flowering plants. The order will of necessity contain the family Alismataceae....
 of the monocots.

It is a herbaceous
Herbaceous

A herbaceous plant is a plant that has leaf and stem that die down at the end of the growing season to the soil level. A herbaceous plant may be Annual plant, Biennial plant or Perennial plant....
 perennial plant
Perennial plant

A perennial plant or perennial is a plant that lives for more than two years. When used by gardeners or horticulturalists, this term applies specifically to perennial herbaceous plants....
, native to cool temperate regions of the Northern Hemisphere
Northern Hemisphere

The Northern Hemisphere is the half of a planet that is north of the equator?the word sphere literally means 'half sphere'. It is also that half of the celestial sphere north of the celestial equator....
, where it grows in wet Sphagnum
Sphagnum

Sphagnum is a genus of between 151-350 Specie of mosses commonly called peat moss, due to its prevalence in peat bogs and mires. A distinction is made between sphagnum moss, the live moss growing on top of a peat bog, and sphagnum peat moss, the decaying matter underneath....
 peat bogs. It grows to 10-40 cm tall, with narrow linear leaves
Leaf

In botany, a leaf is an above-ground plant Organ specialized for photosynthesis. For this purpose, a leaf is typically flat and thin, to expose the cells containing chloroplast to light over a broad area, and to allow light to penetrate fully into the tissues....
 with a basal sheath. The flower
Flower

A flower, sometimes known as a bloom or blossom, is the reproduction structure found in flowering plants . The biological function of a flower is to mediate the union of male sperm with female ovum in order to produce seeds....
s are greenish-yellow, 4-6 mm diameter, with six tepal
Tepal

Tepals are elements of the perianth, or outer part of a flower, which include the petals or sepals. The term tepal is usually used when all segments of the perianth are of similar shape and color, or undifferentiated....
s.

There are two subspecies
Subspecies

In biology, subspecies is the taxonomic rank immediately subordinate to a species. A subspecies is a taxonomic group which is less distinct than the Common descent or species from which it originates....
, not considered distinct by all authorities:
  • Scheuchzeria palustris subsp. palustris. Northern and eastern Europe
    Europe

    Europe is, conventionally, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural , the Caspian Sea, and by the Caucasus Mountains to the southeast....
    , northern Asia
    Asia

    Asia is the world's largest and most populous continent. It covers 8.6% of the Earth's total surface area and, with over 4 billion people, it contains more than 60% of the world's current human population....
    .
  • Scheuchzeria palustris subsp. americana (Fernald) Hultén. Northern North America
    North America

    North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
    .


Etymology

The genus is named after Johann Jakob Scheuchzer
Johann Jakob Scheuchzer

Johann Jakob Scheuchzer was a Switzerland scholar born at Z?rich.The son of the senior town physician of Z?rich, he received his education in that place, and, in 1692, went to the University of Altdorf near Nuremberg, being intended for the medical profession....
, a Swiss
Switzerland

Switzerland is a landlocked Swiss Alps country of roughly 7.7 million people in Western Europe with an area of 41,285 km?. Switzerland is a federal republic consisting of 26 states called Cantons of Switzerland....
 naturalist, and his brother, Johann Kaspar Scheuchzer. The species name is from the Latin for a swamp
Swamp

A swamp is a wetland featuring temporary or permanent inundation of large areas of land, by shallow bodies of water. A swamp generally has a substantial number of hammock , or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodical inundation....
.

The English name refers to its occurrence on Rannoch Moor
Rannoch Moor

Rannoch Moor is a large expanse of around 50 square miles of boggy moorland to the west of Loch Rannoch, in Perth and Kinross and Lochaber, Scottish Highlands, partly northern Argyll and Bute, Scotland....
 in central Scotland
Scotland

conventional_long_name = ScotlandAlba|common_name= Scotland|image_flag = Flag of Scotland.svg|flag_width = 130px...
, the first site in Great Britain
Great Britain

Great Britain is an island lying to the northwest of Continental Europe. It is the List of islands by area, and the largest in Europe. With a population of 58.9 million people it is List of islands by population....
 the species was known from, and only one where it currently occurs; it is extinct
Extinction

In biology and ecology, extinction is the death of every member of a species or group of taxon. The moment of extinction is generally considered to be the death of the last individual of that species ....
 at a few other wetland sites further south in Britain.