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Evening Primrose

Denomination: 'Innoeno131'
Trade name: Lemon Drop
Botanical Name: Oenothera
Applicant/Holder: InnovaPlant Zierpflanzen GmbH & Co. KG
Postfach 113
Breeder: Silvia Hofmann, InnovaPlant Zierpflanzen GmbH & Co. KG, Gensingen, Germany
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2004-06-07
Application Number: 04-4219
Grant of Rights Date: 2006-10-03
Certificate Number: 2534
Date rights surrendered: 2019-10-03

Variety Description

Variety used for comparison: 'Cold Crick'

Summary: 'Innoeno131' has a narrower plant width and longer stem internode length than 'Cold Crick'. 'Innoeno131' has medium foliage density while 'Cold Crick' has dense foliage. 'Innoeno131' flowers almost continuously while 'Cold Crick' flowers in the spring only.


'Innoeno131' has a semi-upright to bushy-compact growth habit. The foliage is medium in density and the stem is light green in colour with dense pubescence and brown anthocyanin. The leaves are narrow elliptic in shape with an acute apex and attenuate base. The leaf blade margin in entire. There is dense pubescence on the upper and lower side of the leaf blade. The leaf blade is dark green in colour and becomes red as it senesces. There is no petiole.

The sepal is lanceolate in shape. There is no pubescence on the upper side of the sepal and dense pubescence on the lower side. The sepal is fused and is yellow to light green in colour. 'Innoeno131' flowers early and almost continuously over the growing season. The inflorescence type is a raceme. The flower bud is elliptic in shape. The petal is obovate in shape with an emarginate apex. The upper side of the petal is yellow in colour. The anther is yellow in colour before dehiscence and the filament is yellow. The inferior ovary is green in colour.

Origin & Breeding History: 'Innoeno131' originated from a controlled cross conducted in Gensingen, Germany in 1999. The female parent was the Oenothera fruticosa variety 'African Sun' and the male parent was the Oenothera fruticosa subsp. glauca variety 'Narrow Grey-leaved'. The new variety was selected as a single plant from the resultant progeny in the summer of 2000. Selection criteria included early flowering, long flowering period, large flowers and vigorous growth habit. The new variety was propagated by vegetative cuttings in 2001 in Gensingen, Germany.

Tests & Trials: 'Innoeno131' was tested in a polyhouse during the summer of 2005, in St. Thomas, Ontario. The trial included 15 plants of the candidate and reference varieties. Rooted cuttings were transplanted into 11 cm pots on June 1, 2005. All colour measurements were made using the RHS Colour Chart 2001. Measured characteristics were based on ten plant measurements.

Comparison tables for 'Innoeno131' with reference variety 'Cold Crick'

Plant width (cm)

  'Innoeno131' 'Cold Crick'
mean 30.6 41.4

Length of internodes (cm)

  'Innoeno131' 'Cold Crick'
mean 2.9 1.2
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