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Denomination: 'KLEST07337'
Botanical Name: Streptocarpus saxorum
Applicant/Holder: Klemm, Nils
Hanfäcker 10
Breeder: Nils Klemm, Stuttgart, Germany
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2007-03-30
Application Number: 07-5826
Date Withdrawn: 2010-08-27

Variety Description

Variety used for comparison: 'Concord Blue'

Summary: The plants and foliage of 'KLEST07337' are shorter and narrower than those of 'Concord Blue'. The main colour of the flowers of 'KLEST07337' is dark violet to violet whereas it is blue violet for 'Concord Blue'. The lower lobes of the flowers of 'KLEST07337' are wider than those of 'Concord Blue'.


PLANT: upright-mounding compact growth habit, weak vigour, dense branching, dense foliage
STEM: medium thickness, light green, weak anthocyanin colouration, strong density of pubescence

LEAF: opposite arrangement, ovate and elliptic shape, narrow to broad acute apex, obtuse base, entire margin, no variegation
UPPER SIDE: medium green, very dense pubescence
LOWER SIDE: light green
PETIOLE: present, absent or very weak anthocyanin colouration

INFLORESCENCE: brown purple (RHS N77A) peduncle, very strong intensity of anthocyanin colouration on pedicel, raceme, positioned in the terminal and axillary positions
FLOWER: outward attitude, violet to dark violet (RHS N87A) on upper surface, violet to light blue violet (RHS 84A-D) on lower surface, no markings on upper lobes, medium to large violet blue (RHS N89A) markings on lower lobes
PALATE: white (RHS N157D), medium size
COROLLA TUBE: blue violet (RHS 83C)

Origin & Breeding History: 'KLEST07337' originated from the controlled pollination of an unnamed plant of Streptocarpus saxorum and 'A014', as the male parent, conducted in October, 2003 in Stuttgart, Germany. In May, 2004, a single plant from the progeny was selected for flower colour, early flowering and flower quality. The new variety was evaluated in greenhouse trials and assessed for flower colour, flower quality, flowering time, branching characteristics and plant vigour. Outdoor evaluations were conducted for performance and foliage and flower tolerance to weather conditions.

Tests & Trials: Trials for 'KLEST07337' were conducted in a polyhouse during the summer of 2009, in St. Thomas, Ontario. The trial included 15 plants of the candidate and reference varieties each individually grown from rooted cuttings and transplanted into 15cm pots on May 5, 2009. Observations and measurements were taken on 10 plants of each variety on September 13, 2009. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'KLEST07337' with reference variety 'Concord Blue'

Plant height (cm)

  'KLEST07337' 'Concord Blue'
mean 14.3 20.4
std. deviation 1.73 1.88

Plant width (cm)

  'KLEST07337' 'Concord Blue'
mean 28.6 37.2
std. deviation 2.19 4.97

Leaf blade length (cm)

  'KLEST07337' 'Concord Blue'
mean 3.0 4.2
std. deviation 0.26 0.19

Leaf blade width (cm)

  'KLEST07337' 'Concord Blue'
mean 1.8 2.6
std. deviation 0.18 0.21

Main colour of flower (RHS)

  'KLEST07337' 'Concord Blue'
Upper lobes much darker than N87A N88B ages to 90D
Lower lobes darker than N87A lighter then N88B

Width of lower lobes of flower (cm)

  'KLEST07337' 'Concord Blue'
mean 1.7 1.2
std. deviation 0.16 0.13

Click on image for larger view
Streptocarpus: 'KLEST07337' (left) with reference variety, 'Concord Blue' (right)

Click on image for larger view
Streptocarpus: 'KLEST07337' (left) with reference variety, 'Concord Blue' (right)

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