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Denomination: 'Biwarena'
Trade name: Ipanema Star
Botanical Name: Glandularia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Henricus G.W. Stemkens, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2005-05-06
Application Number: 05-4849
Grant of Rights Date: 2007-11-28
Certificate Number: 3055
Date rights surrendered: 2008-12-18

Variety Description

Variety used for comparison: 'Suntapilavepi' (Tapien Lavender Pink)

Summary: Plants of 'Biwarena' are taller and have larger leaves than plants of 'Suntapilavepi'. The diameter of the corolla is larger in 'Biwarena' than in 'Suntapilavepi'. The corolla of 'Biwarena' is bicolored, whereas it is streaked in 'Suntapilavepi'. There is less fading of the colour of the corolla in 'Biwarena' than in 'Suntapilavepi'.


PLANT: semi-upright to creeping, medium in height, medium in width

STEM: medium green, moderate pubescence, weak anthocyanin

LEAF: long, wide to very wide
LEAF BLADE: ovate to rhombic, cuneate base, dissected, medium green, no anthocyanin

INFLORESCENCE: very small to small, cylindrical to broad ovate in profile
CALYX: presence of anthocyanin
COROLLA: small to medium in diameter, two-coloured, lighter towards the apex, light blue violet with violet at base, weakly fading with age
COROLLA LOBES: free, recurved, weak undulation of margin
COROLLA TUBE: protruding hair white in colour
COROLLA EYE ZONE: present on three lobes, small to medium in diameter, whitish green.

Origin & Breeding History: 'Biwarena' was developed in 1998 in Enkhuizen, The Netherlands, by the breeder Har Stemkens, an employee of Syngenta Seeds B.V.The new variety originated from a cross made in August 1998 in Enkhuizen, between the female parent 'A717' and the male parent 'A718'. A plant was selected from the resulting progeny in May 1999, based on criteria for early flowering, flower colour and plant habit. The variety has been propagated asexually through vegetative cuttings since June 1999.

Tests & Trials: The tests and trials for 'Biwarena' were conducted in a polyhouse during the spring and summer of 2006, at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants of each variety. Rooted cuttings were transplanted into 10 cm pots on April 18, 2006. Observations and measurements were taken from 10 plants of each variety on June 17 to 19, 2006. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Biwarena' with reference variety 'Suntapilavepi'

Plant height (cm)

  'Biwarena' 'Suntapilavepi'
mean 15.2 7.5
std. deviation 2.66 1.25

Leaf blade length (mm)

  'Biwarena' 'Suntapilavepi'
mean 42.5 21.2
std. deviation 2.88 4.02

Leaf blade width (mm)

  'Biwarena' 'Suntapilavepi'
mean 36.2 12.9
std. deviation 5.07 3.11

Petiole length (mm)

  'Biwarena' 'Suntapilavepi'
mean 11.1 5.6
std. deviation 3.21 1.71

Corolla diameter (mm)

  'Biwarena' 'Suntapilavepi'
mean 17.1 14.9
std. deviation 0.57 0.74

Colour on upper side of corolla (RHS)

  'Biwarena' 'Suntapilavepi'
main 76D lighter than 77D fading to 76D
secondary N82B at base N82B

Click on image for larger view
Verbena: 'Biwarena' (left) with reference variety 'Suntapilavepi' (right)

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