Synthesis

Species description (Flora Helvetica 2018)

10-50(-90) cm hoch, kräftig, unten beblättert, scharf 3kantig. Blätter hellgrün, steif, 5-10 mm breit. Blütenstand mit 4-10 Ästen, diese bis 15 cm lang, an der Spitze die 6-12 mm langen, bräunlichen oder gelblichen Ährchen tragend. Ährchenachse geflügelt. Blütenstand von 2-9 Hochblättern teilweise überragt. Narben 3. Tragblätter am Rücken gerundet. Frucht halb so lang wie diese, dunkelgrau oder rötlich. Essbar sind die 1-2 cm langen Wurzelknöllchen.

Flowering period (Flora Helvetica 2018)

7-10

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Gräben, Teiche, Kulturen / kollin / TI, M, vereinzelt AN

World distribution (Flora Helvetica 2018)

Weltweit verbreitet

Ecological indicator (Landolt & al. 2010)

4w+33-452.g.2n=(108)208
.

Distribution map

Simple

Before threshold year
After threshold year
Before and after threshold year

Advanced

Colors
Validated observations
Observations waiting for validation
Occurrences from Atlas Welten & Sutter (1982) and supplements (1984, 1994) without confirmation in the Info Flora database since
Symbols
Before threshold year
After threshold year
Native
Reintroduced
Not native / introduced / subspontaneous / escaped
Doubtful

Number of observations

Below the threshold number of observations
Above or equal the threshold number of observations

Ecology

Life form

Geophyte

Habitats

Habitats Delarze & al. 2015

Less strictly linked to a specific habitat 2.5.2 - Mehrjährige Schlammflur (Zweizahnflur) (Bidention)
Less strictly linked to a specific habitat 8.2.3.1 - Kalkarmer, lehmiger Hackfruchtacker (Polygono-Chenopodion)

bold Dominant species, influencing the appearance of the habitat
Character species Character species
Less strictly linked to a specific habitat Less strictly linked to a specific habitat

Ecological indicator values by Landolt & al. (2010)

Soil factors Climatic factors Salinity tolerance
Humidity Value H 4w+ Light Value L 4 Salinity Index --
Reaction Value R 3 Temperature factor T 5
Nutriments value N 3 Continentality K 2
  • Ecological values legend
    Humidity Value H
    1very dry
    1+dry
    2moderatly dry
    2+moist
    3medium wet
    3+wet
    4very wet
    4+soggy
    5submerged or underwater
    fplants living in running water
    umostly submerged plants
    vpartly submerged, partly floating plants
    whumidity moderately variable (± scale of 1-2)
    w+highly variable humidity (scale exceeding ± 2)
    Reaction Value R
    1Very acid (pH 2.5-5.5)
    2acid (pH 3.5-6.5)
    3lightly acid to neutral (pH 4.5-7.5)
    4neutral to basic (pH 5.5-8.5)
    5basic (pH 6-5 -> 8.5
    Nutriments value N
    1very low in nutrients
    2low in nutriments
    3medium-poor to medium-rich in nutrients
    4rich in nutriments
    5very rich in nutriments
    Salinity tolerance
    1halotolerant
    3halophyle
    Light Value L
    1very shady
    2shady
    3lighted areas
    4luminous
    5highly luminous
    Temperature factor T
    1alpine to nival stages (from the treeline to the snowline)
    1+suprasubalpine and upper subalpine levels (pine and larch forests)
    2subalpine level (coniferous forests without beeches up to the upper limit of spruces)
    2+lower subalpine and upper mountain stages
    3mountain level (beech and silver fir forests, in the central Alps Scots pine forests)
    3+lower mountain and upper hill levels
    4hill level (mixed deciduous oak forests)
    4+hot places, hill level
    5very hot places, hill level (only in the hottest places, typical of southern Europe)
    Continentality K
    1Atlantic (high air humidity, very low temperature variations, mild winters)
    2Sub-Atlantic (high air humidity, low temperature variations, relatively mild winters)
    3sub-Atlantic to subcontinental (average air humidity, moderately variable temperature, slightly low winter temperatures)
    4subcontinental (low air humidity, large temperature variations, rather cold winters)
    5continental (very low air humidity, very large temperature variations, cold winters)

Nomenclature

Vernacular name

Deutscher Name:
Essbares Zypergras, Erdmandel
Nom français:
Souchet comestible
Nome italiano:
Zigolo dolce

Match with other reference books

Relation Nom Book No
=Cyperus esculentus L.Checklist 2017129660
=Cyperus esculentus L.Flora Helvetica 20012472
=Cyperus esculentus L.Flora Helvetica 20122648
=Cyperus esculentus L.Flora Helvetica 20182648
=Cyperus esculentus L.Index synonymique 1996129660
=Cyperus esculentus L.SISF/ISFS 2129660

= The taxon corresponds to the accepted taxon (Checklist 2017)
< The taxon is included in the accepted taxon (Checklist 2017)
> The taxon includes (among others) also the accepted taxon (Checklist 2017)

Status

Native status   -  -

Species from the "Black List" Neophyte- fact sheet