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Amaranthus blitum aggr.

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Species description (© Flora Helvetica 2018)

Stängel 10-80 cm, niederliegend oder aufsteigend bis aufrecht, kahl, Blütenknäuel in Blattwinkeln und endständigen, ährigen, oft verzweigten Blütenständen. Vorblätter kürzer als die Blüten, mit kurzer Spitze. Weibliche Blüten mit (2-)3 Perigonblättern. Die Frucht öffnet sich zur Fruchtreife nicht, bei mechanischer Belastung unregelmässig aufreissend.

Flowering period (© Flora Helvetica 2018)

7-9

Habitat and distribution inside Switzerland (© Flora Helvetica 2018)

Äcker, Wegränder, Schuttplätze / kollin-montan / CH

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

Ecology

Life form

Therophyte

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 2+ Light Value L 4 Salinity Index
Reaction Value R 3 Temperature factor T 4
Nutriments value N 4 Continentality K 2
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)

Amaranthus blitum aggr.

Vernacular name

Deutscher Name:
Bläulicher Amarant
Nom français:
Amarante bleuâtre
Nome italiano:
Amaranto livido

Match with other reference books

Relationship Scientific name Book No
=Amaranthus blitum aggr.Checklist 201727600
=Amaranthus blitum L.Flora alpina 200436.1.11
=Amaranthus blitum L.Flora Helvetica 2001437
=Amaranthus blitum L.Flora Helvetica 20121133
=Amaranthus blitum aggr.Flora Helvetica 20181133
=Amaranthus blitum L.Index synonymique 199627600
=Amaranthus blitum L.SISF/ISFS 227600
=
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)

Checklist 2017 comments

Neue Rangstufe: Wechsel von Art zu Aggregat. Durch Hinzukommen zusätzlicher Neophyten und der präziseren Fassung der Artengruppe ist die bisherige A. blitum L. neu als Aggregat zu betrachten.

Checklist

Status

Native status

-

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