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Bromus inermis Leyss.

Species
ISFS : 66100
Checklist : 1007360

Synthesis

Species description (© Flora Helvetica 2018)

30-120 cm hoch. Blätter 6-10 mm breit, flach, bewimpert oder kahl, unterseits rau. Blatthäutchen bis 2 mm lang, zerschlitzt, Blattscheiden glatt. Rispe 10-20 cm lang, allseitswendig, aufrecht. Äste schief aufrecht. Ährchen 2-3 cm lang. Untere Hüllspelze 1-, obere 3nervig. Deckspelzen stumpf, ohne Granne oder diese nicht über 3 mm lang, +/- kahl.

Flowering period (© Flora Helvetica 2018)

6-7

Habitat and distribution inside Switzerland (© Flora Helvetica 2018)

Wegränder, Bahnareale, Flussufer / kollin-montan(-subalpin) / CH

World distribution (© Flora Helvetica 2018)

Eurasiatisch

Ecological indicator (© Flora Helvetica 2018)

2w43-44+4.h.2n=(28),42,56(76)

Anatomy

Summary of leaf anatomy (German)

Obere Epidermiszellen gleich gross wie untere. Verbindungs-Steg zwischen oberer und unterer Epidermis homogen verholzt. Leitbündel im Verbindungs-Steg in der Mitte eingebettet. Leitbündelhülle verholzt.

Summary of stem anatomy (German)

Umriss rund oder oval. Leitbündel in einer Reihe. Epidermiszellen verholzt. Chlorenchyma in tangential verlängerten Gruppen.

Description

Culm-diameter 1-2 mm, wall very large, radius of culm in relation to wall thickness approximately 1:0.75. Outline circular with a smooth surface. Culm-center hollow and surrounded by many large thin-walled, not lignified cells. Epidermis-cells thick-walled all around. Large vascular bundles arranged in 2-3 peripheral rows. Chlorenchyma in round, oval, square or rectangular groups. Sclerenchyma in a large, peripheral continuous belt (> 3 cells). Cells thick-walled. Sclerenchymatic sheath bilateral, large at both radial ends of 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.

Distribution map (Atlas)

Dataset last updated:

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

Habitat and distribution inside Switzerland

CH

World distribution

Eurasiatisch

Ecology

Life form

Perennial hemicryptophyte

Habitats

Habitats © Delarze & al. 2015

Less strictly linked to a specific habitat 4.6 - Grasbrachen
Less strictly linked to a specific habitat 4.6.1 - Queckenbrache (Convolvulo-Agropyrion)

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

Accepted Name (Checklist 2017)

Bromus inermis Leyss.

Vernacular name

Deutscher Name :

Grannenlose Trespe

Nom français :

Brome sans arêtes

Nome italiano :

Forasacco spuntato

Match with other reference books

Relation Nom Book No
=Bromus inermis Leyss.Checklist 201766100
=Bromus inermis Leyss.Flora Helvetica 20012603
=Bromus inermis Leyss.Flora Helvetica 20122779
=Bromus inermis Leyss.Flora Helvetica 20182779
=Bromus inermis Leyss.Index synonymique 199666100
=Bromus inermis Leyss.Landolt 1977365
=Bromus inermis Leyss.Landolt 1991329
=Bromus inermis Leyss.SISF/ISFS 266100
=Bromus inermis Leyss.Welten & Sutter 19822250
= 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