Species information

Synthesis

Species description (Flora Helvetica 2018)

Stängel oft dunkelrot gefleckt. Blätter am Grund gerundet oder gestutzt, 7-20 cm lang, lederig, dadurch langsam welkend, unterseits kahl oder auf den Nerven warzig-papillös, Hauptnerv unterseits kantig. Blütenstände mit +/- aufrechten Ästen.

Flowering period (Flora Helvetica 2018)

7-9

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Hecken, Schuttplätze, Ufer / kollin-montan / Kultiviert und oft verwildert. CH

Ecological indicator (Landolt & al. 2010)

3⁺w⁺34-342.g.2n=44

Distribution map

Map settings

Atlas symbols

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:

Japanischer Staudenknöterich

Nom français:

Renouée du Japon

Nome italiano:

Poligono del Giappone

Match with other reference books

Relation	Nom	Book	No
=	Reynoutria japonica Houtt.	Checklist 2017	343200
=	Reynoutria japonica Houtt.	Flora Helvetica 2001	464
=	Reynoutria japonica Houtt.	Flora Helvetica 2012	1269
=	Reynoutria japonica Houtt.	Flora Helvetica 2018	1269
=	Reynoutria japonica Houtt.	Index synonymique 1996	343200
=	Reynoutria japonica Houtt.	SISF/ISFS 2	343200
=	Reynoutria japonica Houtt.	Welten & Sutter 1982	179

= 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 - -

Species from the "Black List"

Neophyte- fact sheet

Ecology

Life form

Habitats

flora.fl.habitats_delarze

	*5.1.3 - Feuchter Krautsaum (Tieflagen) (Convolvulion)*

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)

flora.fl.val_ecologique_sol		flora.fl.val_ecologique_climat		flora.fl.val_ecologique_salinite
flora.fl.val_ecologique_H	--	flora.fl.val_ecologique_L	--	flora.fl.val_ecologique_S	--
flora.fl.val_ecologique_R	--	flora.fl.val_ecologique_T	--
flora.fl.val_ecologique_N	--	flora.fl.val_ecologique_C	--

flora.fl.val_ecologique_legende

flora.fl.val_ecologique_H
1	flora.fl.val_ecologique_H_1
1⁺	flora.fl.val_ecologique_H_1plus
2	flora.fl.val_ecologique_H_2
2⁺	flora.fl.val_ecologique_H_2plus
3	flora.fl.val_ecologique_H_3
3⁺	flora.fl.val_ecologique_H_3plus
4	flora.fl.val_ecologique_H_4
4⁺	flora.fl.val_ecologique_H_4plus
5	flora.fl.val_ecologique_H_5
^	flora.fl.val_ecologique_H_f
U	flora.fl.val_ecologique_H_u
V	flora.fl.val_ecologique_H_v
w	flora.fl.val_ecologique_W_2
w⁺	flora.fl.val_ecologique_W_3

flora.fl.val_ecologique_R
1	flora.fl.val_ecologique_R_1
2	flora.fl.val_ecologique_R_2
3	flora.fl.val_ecologique_R_3
4	flora.fl.val_ecologique_R_4
5	flora.fl.val_ecologique_R_5

flora.fl.val_ecologique_N
1	flora.fl.val_ecologique_N_1
2	flora.fl.val_ecologique_N_2
3	flora.fl.val_ecologique_N_3
4	flora.fl.val_ecologique_N_4
5	flora.fl.val_ecologique_N_5

flora.fl.val_ecologique_salinite
1	flora.fl.val_ecologique_salinite_s
3	flora.fl.val_ecologique_salinite_ss

flora.fl.val_ecologique_L
1	flora.fl.val_ecologique_L_1
2	flora.fl.val_ecologique_L_2
3	flora.fl.val_ecologique_L_3
4	flora.fl.val_ecologique_L_4
5	flora.fl.val_ecologique_L_5

flora.fl.val_ecologique_T
1	flora.fl.val_ecologique_T_1
1⁺	flora.fl.val_ecologique_T_1plus
2	flora.fl.val_ecologique_T_2
2⁺	flora.fl.val_ecologique_T_2plus
3	flora.fl.val_ecologique_T_3
3⁺	flora.fl.val_ecologique_T_3plus
4	flora.fl.val_ecologique_T_4
4⁺	flora.fl.val_ecologique_T_4plus
5	flora.fl.val_ecologique_T_5

flora.fl.val_ecologique_C
1	flora.fl.val_ecologique_C_1
2	flora.fl.val_ecologique_C_2
3	flora.fl.val_ecologique_C_3
4	flora.fl.val_ecologique_C_4
5	flora.fl.val_ecologique_C_5