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Juncus compressus Jacq.

Species
SIFS: 218600
Checklist: 1024980

Synthesis

Species description (© Flora Helvetica 2018)

Ähnlich wie J. tenuis, aber blütentragende Stängel abgeflacht, mit 2-5 Blättern, wenigstens ein Blatt im mittleren Teil. Blütenstand meist nur von einem Hochblatt überragt. Perigonblätter 2-3 mm lang, stumpf, braun, mit häutigem Rand, deutlich kürzer als die braune Frucht.

Flowering period (© Flora Helvetica 2018)

6-8

Habitat and distribution inside Switzerland (© Flora Helvetica 2018)

Feuchte Wege, Wiesen, Ödland / kollin-subalpin / CH

World distribution (© Flora Helvetica 2018)

Eurosibirisch-nordamerikanisch

Ecological indicator (© Flora Helvetica 2018)

4w+33+433.g.2n=40,44

Status

IUCN status

 Least concern (LC)

Anatomy

Summary of stem anatomy (German)

Umriss rund oder oval. Leitbündel in einer Reihe. Epidermiszellen verholzt.

Description

Culm-diameter 1-2 mm, center full, radius of culm in relation to wall thickness 1:1. Outline circular with a smooth surface. Culm-center full, containing unlignified cells. Without cortex/cylinder separation. Epidermis smooth. Epidermis thin-, peripheral thicker-walled (lignified). Large vascular bundles arranged in one peripheral row. Chlorenchyma present, continuous peripheral belt with unlignified round cells (like a large cortex). Sclerenchyma belt in a wavy, continuous belt centripetal of the chlorenchyma. Vascular bundles collateral closed. Sclerenchymatic sheath around vascular bundles circular large, 3 to x cells. Vessels arrangement in vascular bundles in lateral position. Largest vessel in the bundle small, < 20 μm. Distinct cavities (intercellulars) in the protoxylem area of vascular bundles.

Distribution map (Atlas)

Dataset last updated:
Data is updated once a day, whenever possible.

Simple

Before threshold year
From 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
From 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
Symbols
Valley surfaces Mountain surfaces
Abundant or frequent presence
Scarce or rare presence
H Herbarium sample
L Mentioned in the litterature
Colors
Occurrences from Atlas Welten & Sutter (1982)
Occurrences from supplements 1984
Occurrences from supplements 1994

Distribution in Switzerland (© Flora Helvetica 2018)

CH

World distribution (© Flora Helvetica 2018)

Eurosibirisch-nordamerikanisch

Ecology

Life form

Geophyte

Habitats

Habitats © Delarze & al. 2015

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 1
Reaction Value R 3 Temperature factor T 3
Nutriments value N 3 Continentality K 3
Ecological values legend

Humidity Value H

1
very dry
1+
dry
2
moderatly dry
2+
moist
3
medium wet
3+
wet
4
very wet
4+
soggy
5
submerged or underwater
f
plants living in running water
u
mostly submerged plants
v
partly submerged, partly floating plants
w
humidity moderately variable (± scale of 1-2)
w+
highly variable humidity (scale exceeding ± 2)

Reaction Value R

1
Very acid (pH 2.5-5.5)
2
acid (pH 3.5-6.5)
3
lightly acid to neutral (pH 4.5-7.5)
4
neutral to basic (pH 5.5-8.5)
5
basic (pH 6-5 -> 8.5

Nutriments value N

1
very low in nutrients
2
low in nutriments
3
medium-poor to medium-rich in nutrients
4
rich in nutriments
5
very rich in nutriments

Salinity tolerance

1
halotolerant
3
halophyle

Light Value L

1
very shady
2
shady
3
lighted areas
4
luminous
5
highly luminous

Temperature factor T

1
alpine to nival stages (from the treeline to the snowline)
1+
suprasubalpine and upper subalpine levels (pine and larch forests)
2
subalpine level (coniferous forests without beeches up to the upper limit of spruces)
2+
lower subalpine and upper mountain stages
3
mountain level (beech and silver fir forests, in the central Alps Scots pine forests)
3+
lower mountain and upper hill levels
4
hill level (mixed deciduous oak forests)
4+
hot places, hill level
5
very hot places, hill level (only in the hottest places, typical of southern Europe)

Continentality K

1
Atlantic (high air humidity, very low temperature variations, mild winters)
2
Sub-Atlantic (high air humidity, low temperature variations, relatively mild winters)
3
sub-Atlantic to subcontinental (average air humidity, moderately variable temperature, slightly low winter temperatures)
4
subcontinental (low air humidity, large temperature variations, rather cold winters)
5
continental (very low air humidity, very large temperature variations, cold winters)

Nomenclature

Accepted Name (Checklist 2017)

Juncus compressus Jacq.

Vernacular name

Deutscher Name:
Zusammengedrückte Binse
Nom français:
Jonc comprimé
Nome italiano:
Giunco compresso

Match with other reference books

Relationship Scientific name Book No
=Juncus compressus Jacq.Checklist 2017218600
=Juncus compressus Jacq.Flora alpina 2004137.1.10
=Juncus compressus Jacq.Flora Helvetica 20012440
=Juncus compressus Jacq.Flora Helvetica 20122612
=Juncus compressus Jacq.Flora Helvetica 20182612
=Juncus compressus Jacq.Index synonymique 1996218600
=Juncus compressus Jacq.Landolt 1977589
=Juncus compressus Jacq.Landolt 1991516
=Juncus compressus Jacq.SISF/ISFS 2218600
=Juncus compressus Jacq.Welten & Sutter 19822144
=
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

-

IUCN list of endangered species (© Walter & Gillett 1997):   No

Status on national Red List

IUCN status: Least concern

Least concern

Additional information

IUCN criteria:

Status on regional Red List 2019

Biogeographic regions IUCN status IUCN criteria
Jura (JU) LC
Mittelland (MP) LC
Alpennordflanke (NA) LC
Alpensüdflanke (SA) LC
Östliche Zentralalpen (EA) LC
Westliche Zentralalpen (WA) LC
Legend
EX
Extinct
RE
Regionally Extinct
CR(PE)
Critically Endangered, Probably Extinct
CR
Critically Endangered
EN
Endangered
VU
Vulnerable
NT
Near Threatened
LC
Least Concern
DD
Data Deficient
NE
Not Evaluated
NA
Not Applicable

National Priority Species List Status

No national priority or international responsability

Protection status

No international, national or cantonal protection

Disclaimer
InfoFlora compiles information on protected species as accurately as possible, taking it from the respective cantonal laws. In some cases, however, it was not possible to use the plant names as listed in the original text, but an interpretation of their taxonomy or nomenclature was necessary. The exact meaning of the categories „completely protected“ and „partially protected“ differs among the cantons.

InfoFlora cannot guarantee that the information on the protection status is correct and complete. In case of doubts, we recommend to look up the texts of the respective cantonal law.

Status by sector of activity

Agriculture-related environmental objectives: L - more informations

Crop Wild Relatives

CWR specie