Synthesis

Species description (Flora Helvetica 2018)

10-60 cm lang, rasig wachsend, niederliegend und knickig aufsteigend, an den unteren Knoten wurzelnd, verzweigt. Blätter 2-6 mm breit und 2-6(-10) cm lang, rechtwinklig abstehend. Blatthäutchen 0,2-0,5 mm lang, gestutzt, oben bewimpert. Blütenstand eine 3-15 cm lange, sehr schlanke und schlaffe ährige Rispe. Ährchen einblütig. Hüllspelzen nur 0,1-0,5 mm lang. Deckspelze 1,5-2,5 mm lang, 3(-5)nervig, am Grund mit wenigen bis 1,5 mm langen Haaren und 2-5 mm langer Granne.

Flowering period (Flora Helvetica 2018)

9-10

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Wegränder, Rasenplätze, Gebüsche / kollin / Im südlichen TI in Ausbreitung, ME

World distribution (Flora Helvetica 2018)

Stammt aus Nordamerika

Ecological indicator (Landolt & al. 2010)

233-353.h.2n=40
.

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

Perennial hemicryptophyte

Habitats

Habitats Delarze & al. 2015

NO INFORMATION

Ecological indicator values by Landolt & al. (2010)

Soil factors Climatic factors Salinity tolerance
Humidity Value H 2 Light Value L 3 Salinity Index --
Reaction Value R 3 Temperature factor T 5
Nutriments value N 3 Continentality K 3
  • 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:
Tropfensame
Nom français:
Muhlenbergia de Schreber
Nome italiano:
Muhlenbergia di Schreber

Match with other reference books

Relation Nom Book No
=Muhlenbergia schreberi J. F. Gmel.Checklist 2017265000
=Muhlenbergia schreberi J. F. Gmel.Flora Helvetica 20012768
=Muhlenbergia schreberi J. F. Gmel.Flora Helvetica 20122948
=Muhlenbergia schreberi J. F. Gmel.Flora Helvetica 20182948
=Muhlenbergia schreberi J. F. Gmel.Index synonymique 1996265000
=Muhlenbergia schreberi J. F. Gmel.Landolt 1977200
=Muhlenbergia schreberi J. F. Gmel.Landolt 1991188
=Muhlenbergia schreberi J. F. Gmel.SISF/ISFS 2265000

= 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   -  -

Anatomy

Images and descriptions (© Fritz H. Schweingruber & Hugo Berger)

text alt Stems, 100x
text alt Stems 400x

Summary of stem anatomy (German)

Umriss rund oder oval. Leitbündel in mehreren Reihen. Epidermiszellen verholzt.

Description

Culm-diameter 0.5-1 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. Epidermis-cells thick-walled all around. Large vascular bundles arranged in 2-3 peripheral rows. Chlorenchyma very small in 1-3 lined-up cells. Sclerenchyma in a large, peripheral continuous belt (> 3 cells). Cells thick-walled. Small sclerenchymatic sheath with 1-2 cells around vascular bundles. Largest vessels in vascular bundles in lateral position. Largest vessel in the bundle 20-50 μm. Cavities (intercellulars) between parenchyma-cells present, small, often triangular. Distinct cavities (intercellulars) in the protoxylem area of vascular bundles.