Species information

Synthesis

Species description (Flora Helvetica 2018)

Bis 15 m hoher Baum mit dicht braun behaarten Zweigen. Blätter gegenständig, herzförmig, ganzrandig, bis über 30 cm lang, unterseits filzig behaart. Blüten in aufrechten Rispen. Krone lila bis blauviolett, eng glockenförmig, 4-7 cm lang, abwärts gebogen, mit bauchiger, am Grund verengter Röhre und 5 rundlichen, zurückgebogenen Zipfeln. Frucht eine ca. 4 cm lange, sich mit 2 Klappen öffnende Kapsel.

Flowering period (Flora Helvetica 2018)

4-5

Habitat and distribution inside Switzerland (Flora Helvetica 2018)

Kultiviert und im Süden zuweilen verwildert /

World distribution (Flora Helvetica 2018)

Stammt aus Ostasien

Ecological indicator (Landolt & al. 2010)

333-352.p.2n=40

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

Ecology

Life form

Phanerophyte

Habitats

Habitats Delarze & al. 2015

	6.3.9 - Robinienwald (Robinion)

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	3	Light Value L	3	Salinity Index	--
Reaction Value R	3	Temperature factor T	5
Nutriments value N	3	Continentality K	2

Ecological values legend

Humidity Value H
1	very dry
1⁺	dry
2	moderatly dry
2⁺	moist
3	medium wet
3⁺	wet
4	very wet
4⁺	soggy
5	submerged or underwater
f	plants living in running water
u	mostly submerged plants
v	partly submerged, partly floating plants
w	humidity moderately variable (± scale of 1-2)
w⁺	highly variable humidity (scale exceeding ± 2)

Reaction Value R
1	Very acid (pH 2.5-5.5)
2	acid (pH 3.5-6.5)
3	lightly acid to neutral (pH 4.5-7.5)
4	neutral to basic (pH 5.5-8.5)
5	basic (pH 6-5 -> 8.5

Nutriments value N
1	very low in nutrients
2	low in nutriments
3	medium-poor to medium-rich in nutrients
4	rich in nutriments
5	very rich in nutriments

Salinity tolerance
1	halotolerant
3	halophyle

Light Value L
1	very shady
2	shady
3	lighted areas
4	luminous
5	highly luminous

Temperature factor T
1	alpine to nival stages (from the treeline to the snowline)
1⁺	suprasubalpine and upper subalpine levels (pine and larch forests)
2	subalpine level (coniferous forests without beeches up to the upper limit of spruces)
2⁺	lower subalpine and upper mountain stages
3	mountain level (beech and silver fir forests, in the central Alps Scots pine forests)
3⁺	lower mountain and upper hill levels
4	hill level (mixed deciduous oak forests)
4⁺	hot places, hill level
5	very hot places, hill level (only in the hottest places, typical of southern Europe)

Continentality K
1	Atlantic (high air humidity, very low temperature variations, mild winters)
2	Sub-Atlantic (high air humidity, low temperature variations, relatively mild winters)
3	sub-Atlantic to subcontinental (average air humidity, moderately variable temperature, slightly low winter temperatures)
4	subcontinental (low air humidity, large temperature variations, rather cold winters)
5	continental (very low air humidity, very large temperature variations, cold winters)

Nomenclature

Vernacular name

Deutscher Name:

Blauglockenbaum, Paulownie

Nom français:

Paulownia

Nome italiano: