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Denomination: 'Bonscawi'
Trade name: Surdiva White
Botanical Name: Scaevola aemula
Applicant/Holder: Bonza Botanicals Pty., Ltd.
244 Singles Ridge Road
Yellow Rock, New South Wales
Breeder: Andrew Berneutz, Silverdale, Australia
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2007-09-21
Application Number: 07-6005
Grant of Rights Date: 2009-08-25
Certificate Number: 3589
Date rights surrendered: 2015-08-21

Variety Description

Variety used for comparison: 'Scawihatis' (Whirlwind White)

Summary: 'Bonscawi' has a shorter plant height and narrower plant width than 'Scawihatis'. 'Bonscawi' has a shorter corolla length and narrower corolla width than 'Scawihatis'. 'Bonscawi' has yellow green secondary colour on the inner side of the corolla at the base while 'Scawihatis' has yellow green secondary colour with a yellow spot at the base.


PLANT: semi-upright to spreading/trailing growth habit, many branches
STEM: light green, no anthocyanin colouration, medium pubescence, thin to medium thickness, smooth

LEAF: alternate arrangement, simple, obovate to spatulate, obtuse apex with mucronate tip, attenuate base, crenate to dentate margin, sparse to medium pubescence on upper side, medium pubescence at midrib on lower side, medium green on upper side, light green on lower side, no variegation

FLOWERING: almost continuous, early to mid-season, long length of flowering
INFLORESCENCE: both terminal and axillary in position, single flower per leaf axil
COROLLA: fan-shaped, petals partially fused, five, medium pubescence at throat, white on inner side with yellow green at base, white on outer side with whitish-yellow along midvein, light green on inner and outer side of corolla tube
PETAL: entire margin, absent to very weak undulation of margin, obovate shape, mucronate apex.

Origin & Breeding History: 'Bonscawi' originated from an open pollination made at Yellow Rock, New South Wales, Australia in 2003. The female parent was the proprietary variety 00-38.17 and the pollen was derived from a group of several proprietary varieties. Seeds from the open pollination were germinated and grown to maturity. One plant was selected on January 13, 2004 and propagated by cuttings. These were grown in potted trials from February to December 2004.

Tests & Trials: Trials for 'Bonscawi' were conducted during the spring/summer of 2008 in a polyhouse at BioFlora Inc. in St. Thomas, Ontario. There were 15 plants each of the candidate and reference variety. The plants were grown from rooted cuttings which were transplanted into 15 cm pots on April 18, 2008. Observations and measurements were taken from 10 plants on June 13, 2008. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.

Comparison tables for 'Bonscawi' with reference variety 'Scawihatis'

Plant height (cm)

  'Bonscawi' 'Scawihatis'
mean 18.0 25.4
std. deviation 2.26 1.84

Plant width (cm)

  'Bonscawi' 'Scawihatis'
mean 47.1 83.3
std. deviation 2.47 3.72

Corolla length (cm)

  'Bonscawi' 'Scawihatis'
mean 1.4 1.7
std. deviation 0.09 0.08

Corolla width (cm)

  'Bonscawi' 'Scawihatis'
mean 2.6 3.0
std. deviation 0.08 0.17

Colour of inner side of corolla (RHS)

  'Bonscawi' 'Scawihatis'
secondary 150B 150B with spot of 9A

Click on image for larger view
Scaevola: 'Bonscawi' (left) with reference variety 'Scawihatis' (right)

Click on image for larger view
Scaevola: 'Bonscawi' (left) with reference variety 'Scawihatis' (right)

Click on image for larger view
Scaevola: 'Bonscawi' (left) with reference variety 'Scawihatis' (right)

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