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Denomination: 'Argyrantis'
Trade name: Molimba Helio White
Botanical Name: Argyranthemum frutescens
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Ánna M.W.P. Houbraken, 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: 2003-01-09
Application Number: 03-3435
Grant of Rights Date: 2004-12-15
Certificate Number: 2052
Date rights surrendered: 2015-12-15

Variety Description

Varieties used for comparison: 'Harvest Snow' and 'Argyraketis'

Summary: 'Argyrantis' has a shorter plant height than 'Argyraketis' and a taller plant height than 'Harvest Snow'. 'Argyrantis' has a narrower plant width than 'Argyraketis'. 'Argyrantis' has blue-green to grey-green leaf colour while 'Harvest Snow' has green leaf colour. 'Argyrantis' has a larger flower diameter than 'Harvest Snow'.


'Argyrantis' has a bushy rounded growth habit and dense branching. The leaf blade has an attenuate shaped base and a cuspidate apex. The leaf blade is light to medium blue-green to grey green in colour.

'Argyrantis' has a head type, single inflorescence. The peduncle is thin in thickness. The ray florets are straight along the longitudinal axis and are short to medium in length and narrow in width. The ray florets are white in colour. 'Argyrantis' has a disc present. The disc florets are yellowish orange in colour before anther dehiscence and yellow after anther dehiscence.

Origin & Breeding History: 'Argyrantis' was the product of a planned breeding program conducted in Enkhuizen, The Netherlands in 1998. 'Argyrantis' resulted from the open pollination between 'Harvest Snow' and an unidentified male parent selection of Argyranthemum frutescens. The resultant F1 seed was harvested in September 1998 and subsequently sown in a field trial in April 1999. A single plant was selected in the summer of 1999.

Tests & Trials: Tests and trials for 'Argyrantis' were conducted in a polyhouse during the summer of 2003 in St. Thomas, Ontario. The trial included 15 plants of the candidate and reference variety. Plants were grown from unrooted cuttings, stuck on May 30, 2003, and transplanted into 15cm pots on June 28, 2003. All colour determinations were made using the 2001 RHS colour chart and measured characteristics were based on ten measurements.

Comparison tables for 'Argyrantis' with reference varieties 'Harvest Snow' and 'Argyraketis'

Plant height (cm)

  'Argyrantis' 'Harvest Snow' 'Argyraketis'
mean 18.30 14.35 28.30
std. deviation 1.486 1.055 5.229

Plant width (cm)

  'Argyrantis' 'Harvest Snow' 'Argyraketis'
mean 33.70 30.45 40.30
std. deviation 3.230 2.120 3.093

Inflorescence diameter (cm)

  'Argyrantis' 'Harvest Snow' 'Argyraketis'
mean 3.22 2.77 3.19
std. deviation 0.181 0.149 0.119
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