Synthesis

Species description (Flora Helvetica 2018)

10-120 cm hoch, verzweigt. Stängel braunrot, meist kahl. Blätter gefiedert, mit 3-5 gestielten, lanzettlichen, lang zugespitzten, scharf gezähnten Teilblättern, Zähne fein ausgezogen. Blütenköpfe aufrecht, Durchmesser 1-2 cm, mit oder ohne gelbe Zungenblüten. Äussere Hüllblätter 5-10, 5-20 mm lang und 1-3 mm breit, bewimpert. Innere Hüllblätter braun, 5-9 mm lang. Früchte flach, höckerig, vorwärts-rau, 6-10 mm lang, mit meist 2 Borsten.

Flowering period (Flora Helvetica 2018)

8-10

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Wegränder, Schuttplätze, Flussufer / kollin / TI, Genfersee, sonst zerstreut. In Ausbreitung

Ecological indicator (Landolt & al. 2010)

4+w+34+34+2.t.2n=48
.

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:
Dichtbelaubter Zweizahn, Schwarzfrüchtiger Zweizahn
Nom français:
Bident feuillu
Nome italiano:
Forbicina peduncolata

Match with other reference books

Relation Nom Book No
=Bidens frondosa L.Checklist 201761100
=Bidens frondosa L.Flora Helvetica 20012103
=Bidens frondosa L.Flora Helvetica 20122093
=Bidens frondosa L.Flora Helvetica 20182093
=Bidens frondosa L.Index synonymique 199661100
=Bidens frondosa L.Landolt 19773103
=Bidens frondosa L.Landolt 19912501
=Bidens frondosa L.SISF/ISFS 261100
=Bidens frondosa L.Welten & Sutter 19821772

= 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   -  -

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 4+w+ flora.fl.val_ecologique_L 3 flora.fl.val_ecologique_S 1
flora.fl.val_ecologique_R 3 flora.fl.val_ecologique_T 4+
flora.fl.val_ecologique_N 4 flora.fl.val_ecologique_C 2
  • 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