Species information

Synthesis

Species description (© Flora Helvetica 2018)

Ähnlich wie Oe. biennis, aber Blätter 5-10mal so lang wie breit (bei Oe. biennis nur 3-6mal), Blütenstand vor dem Aufblühen nickend oder aufrecht, Kronblätter 0,5-1,5 cm lang, kürzer bis wenig länger als die Staubblätter. Fadenförmige Spitzen der Kelchblätter (im Knospenstadium) vom Grund an spreizend, nicht eng aneinander gedrückt.

Flowering period (© Flora Helvetica 2018)

6-9

Habitat and distribution inside Switzerland (© Flora Helvetica 2018)

Ödland, Ufer, Bahnareale / kollin /

World distribution (© Flora Helvetica 2018)

Ursprünglich nordamerikanisch

Ecological indicator (© Landolt & al. 2010)

233+44⁺2.k-t.2n=14

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

World distribution

Ursprünglich nordamerikanisch

Ecology

Life form

Monocarpic hemicryptophyte, Therophyte

Habitats

Habitats © Delarze & al. 2015

	7.1.6 - Mesophile Ruderalflur (Steinkleeflur) (Dauco-Melilotion)

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	2	Light Value L	4	Salinity Index	1
Reaction Value R	3	Temperature factor T	4+
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

Accepted Name (Checklist 2017)

Oenothera parviflora aggr.

Vernacular name

Deutscher Name :

Kleinblütige Nachtkerze

Nom français :

Onagre à petites fleurs

Nome italiano :

Enagra a fiore piccolo

Match with other reference books

Relation	Nom	Book	No
=	Oenothera parviflora aggr.	Checklist 2017	274700
=	Oenothera parviflora L.	Flora Helvetica 2001	1286
=	Oenothera parviflora L.	Flora Helvetica 2012	1038
=	Oenothera parviflora aggr.	Flora Helvetica 2018	1038
=	Oenothera parviflora L.	Index synonymique 1996	274700
=	Oenothera parviflora L.	SISF/ISFS 2	274700

= 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)

Checklist 2017 comments

Neue Rangstufe: Wechsel von Art zu Aggregat. Durch das Hinzukommen zusätzlicher Neophyten und der präziseren Fassung der Artengruppe ist die bisherige O. parviflora L. neu als Aggregat zu betrachten. Die Aufteilung der Gattung in Aggregate folgt dem taxonomischen Konzept von Dietrich («American School»), während sich die Definition der Arten an den Vorschlägen von Rostański orientiert («European School»).

Checklist

Oenothera parviflora aggr.

1030729