Synthesis

Species description (Flora Helvetica 2018)

Untergetauchte Wasserpflanze mit grundständigen, bandförmigen, 5-10 mm breiten und bis 80 cm langen, flutenden Blättern. Zweihäusig. Blüten weiss, die männlichen in Knäueln, Durchmesser ca. 1 mm, sich von der Pflanze trennend und auf der Wasseroberfläche sich öffnend. Weibliche Blüten einzeln, Durchmesser 2-3 mm, auf langen, die Oberfläche erreichenden, vor und nach dem Blühen schraubig gewundenen Stielen.

Flowering period (Flora Helvetica 2018)

7-10

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Stehende und langsam fliessende, 1-2 m tiefe, kalkarme Gewässer / kollin / Im südlichen TI eingebürgert

Ecological indicator (Landolt & al. 2010)

5u22-351.a.2n=20(40)
Vallisneria spiralis L., © Konrad Lauber
.

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

Nomenclature

Vernacular name

Deutscher Name:
Wasserschraube
Nom français:
Vallisnérie en spirale
Nome italiano:
Vallisneria

Match with other reference books

Relation Nom Book No
=Vallisneria spiralis L.Checklist 2017437700
=Vallisneria spiralis L.Flora Helvetica 20012390
=Vallisneria spiralis L.Flora Helvetica 20122381
=Vallisneria spiralis L.Flora Helvetica 20182381
=Vallisneria spiralis L.Index synonymique 1996437700
=Vallisneria spiralis L.Landolt 1977158
=Vallisneria spiralis L.Landolt 1991149
=Vallisneria spiralis L.SISF/ISFS 2437700
=Vallisneria spiralis L.Welten & Sutter 19822027

= 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   -  -

Status on national Red List 2016

flora.fl.statut_iucn:   Near threatened

LC: Non menacé

flora.fl.complementary_informations

IUCN criteria: D2

  • Legend
    EXExtinct
    RERegionally Extinct
    CR(PE)Critically Endangered, Probably Extinct
    CRCritically Endangered
    ENEndangered
    VUVulnerable
    NTNear Threatened
    LCLeast Concern

IUCN list of endangered species (Walter & Gillett 1997)

No

flora.fl.prio_title

flora.fl.prio_priority --
flora.fl.prio_measures --
flora.fl.prio_responsability --
flora.fl.prio_monitor --

Protection status

International (Bern Convention) No
Cantonal--
Switzerland --

Ecology

Life form

Habitats

flora.fl.habitats_delarze

NO INFORMATION

Ecological indicator values by Landolt & al. (2010)

flora.fl.val_ecologique_sol flora.fl.val_ecologique_climat flora.fl.val_ecologique_salinite
flora.fl.val_ecologique_H 5u flora.fl.val_ecologique_L 3 flora.fl.val_ecologique_S --
flora.fl.val_ecologique_R 2 flora.fl.val_ecologique_T 5
flora.fl.val_ecologique_N 2 flora.fl.val_ecologique_C 1
  • flora.fl.val_ecologique_legende
    flora.fl.val_ecologique_H
    1flora.fl.val_ecologique_H_1
    1+flora.fl.val_ecologique_H_1plus
    2flora.fl.val_ecologique_H_2
    2+flora.fl.val_ecologique_H_2plus
    3flora.fl.val_ecologique_H_3
    3+flora.fl.val_ecologique_H_3plus
    4flora.fl.val_ecologique_H_4
    4+flora.fl.val_ecologique_H_4plus
    5flora.fl.val_ecologique_H_5
    ^flora.fl.val_ecologique_H_f
    Uflora.fl.val_ecologique_H_u
    Vflora.fl.val_ecologique_H_v
    wflora.fl.val_ecologique_W_2
    w+flora.fl.val_ecologique_W_3
    flora.fl.val_ecologique_R
    1flora.fl.val_ecologique_R_1
    2flora.fl.val_ecologique_R_2
    3flora.fl.val_ecologique_R_3
    4flora.fl.val_ecologique_R_4
    5flora.fl.val_ecologique_R_5
    flora.fl.val_ecologique_N
    1flora.fl.val_ecologique_N_1
    2flora.fl.val_ecologique_N_2
    3flora.fl.val_ecologique_N_3
    4flora.fl.val_ecologique_N_4
    5flora.fl.val_ecologique_N_5
    flora.fl.val_ecologique_salinite
    1flora.fl.val_ecologique_salinite_s
    3flora.fl.val_ecologique_salinite_ss
    flora.fl.val_ecologique_L
    1flora.fl.val_ecologique_L_1
    2flora.fl.val_ecologique_L_2
    3flora.fl.val_ecologique_L_3
    4flora.fl.val_ecologique_L_4
    5flora.fl.val_ecologique_L_5
    flora.fl.val_ecologique_T
    1flora.fl.val_ecologique_T_1
    1+flora.fl.val_ecologique_T_1plus
    2flora.fl.val_ecologique_T_2
    2+flora.fl.val_ecologique_T_2plus
    3flora.fl.val_ecologique_T_3
    3+flora.fl.val_ecologique_T_3plus
    4flora.fl.val_ecologique_T_4
    4+flora.fl.val_ecologique_T_4plus
    5flora.fl.val_ecologique_T_5
    flora.fl.val_ecologique_C
    1flora.fl.val_ecologique_C_1
    2flora.fl.val_ecologique_C_2
    3flora.fl.val_ecologique_C_3
    4flora.fl.val_ecologique_C_4
    5flora.fl.val_ecologique_C_5