Sycass Bron


Denomination: 'Sycass Bron'
Trade name: Cassia Bronze
Botanical Name: Chrysanthemum ×morifolium
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Mark Smith, Syngenta Flowers, Inc., Gilroy, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2010-03-19
Application Number: 10-6890
Grant of Rights Date: 2012-12-14
Certificate Number: 4435
Date rights surrendered: 2014-10-03

Variety Description

Variety used for comparison: 'Nutty Fiona Bronze'

Summary: The plant of 'Sycass Bron' is shorter and wider than the plant of 'Nutty Fiona Bronze'. The plant of 'Sycass Bron' has a hemispherical growth habit while the plant of 'Nutty Fiona Bronze' has a semi-upright growth habit.


PLANT: bushy, hemispherical growth habit, dense branching
STEM: green

LEAF: moderately upwards attitude of petiole, terminal lobe medium to long relative to leaf length, lowest lateral lobe of sinus medium to deep with diverging to parallel margins, obtuse base, absent or weak glossiness on upper side, dark green on upper side, margin indentations medium in number and deep

INFLORESCENCE: flat corymbiform, many flower heads per stem, many flower heads per plant
BUD: outer side brown red (RHS 181A-B)
FLOWER HEAD: double, low height, medium to dense ray florets, predominately ligulate type ray florets
RAY FLORET: horizontal attitude of basal part, two weak keels on upper surface, absent to very short corolla tube, flat in cross section at widest part, flat margin, weak incurving along longitudinal axis at distal quarter, ray florets in inner rows straight along longitudinal axis with very weak incurving at distal quarter, emarginate and dentate tip, inner side brown red (redder than RHS 179A) with tones of red (RHS 42A), orange brown (RHS 170C) secondary colour at basal three quarters in mottled pattern, outer side yellow orange (RHS 16C) with brown red (RHS 180C-D) in middle zone and apex
DISC: very small, flat in cross section, medium yellow before anther dehiscence, no dark spot in centre.

Origin & Breeding History: The variety 'Sycass Bron' originated from a controlled cross made in Alva, Florida, USA between October 2005 and March 2006. The female parent was a seedling that originated from bulked seed composed of small amounts of seed from 14 different females and the male parent was the variety 'Cyclops'. The resultant seed was collected and sown in a greenhouse in June 2006. A single plant from the progeny was selected by the breeder on November 27, 2006 in Alva, Florida. The new variety was selected based on criteria for flower colour, early flowering and plant habit.

Tests & Trials: Trials for 'Sycass Bron' were conducted in an outdoor irrigated trial during the summer of 2011 in St. Thomas, Ontario. The trial included a total of 15 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 20 cm pots on June 23, 2011. Observations and measurements were taken from 10 plants of each variety on September 20, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Sycass Bron' with reference variety 'Nutty Fiona Bronze'

Plant height (cm)

  'Sycass Bron' 'Nutty Fiona Bronze'
mean 27.3 32.6
std. deviation 1.48 1.74

Plant width (cm)

  'Sycass Bron' 'Nutty Fiona Bronze'
mean 52.8 46.7
std. deviation 2.04 1.95

Click on image for larger view
Sycass Bron
Chrysanthemum: 'Sycass Bron' (left) with reference variety 'Nutty Fiona Bronze' (right)

Click on image for larger view
Sycass Bron
Chrysanthemum: 'Sycass Bron' (left) with reference variety 'Nutty Fiona Bronze' (right)

Click on image for larger view
Sycass Bron
Chrysanthemum: 'Sycass Bron' (left) with reference variety 'Nutty Fiona Bronze' (right)

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