Royal Zenz


Denomination: 'Royal Zenz'
Botanical Name: Medinilla
Applicant/Holder: Corn. Bak B.V.
Dorpsstraat 11-B
NL-1566 AA
Breeder: Elly Bak, Corn. Bak B.V., Assendelft, Netherlands
Nicolaas David Maria Steur, Corn. Bak B.V., Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2014-02-03
Application Number: 14-8201
Grant of Rights Date: 2015-06-30
Certificate Number: 5084
Date rights surrendered: 2017-06-30

Variety Description


PLANT: lignified shrub
STEM: medium green, lignified parts are medium brown, winged

LEAF: decussate arrangement along stem, two per whorl
PETIOLE: absent
LEAF BLADE: upper side is dark green (darker than RHS N137A) with lighter green veins, brown green (closest to RHS 147B but lighter) on lower side, sunken veins, medium green veins on lower side, elliptic shape, concave in cross section, weakly recurved along longitudinal axis, entire margin, acuminate tip

INFLORESCENCE: hanging panicle with two major branches, four bracts per whorl, bracts located within entire inflorescence, 100-150 flowers in biggest panicle
PEDUNCLE: light green (RHS 145A) with purple (RHS 58A) at apex, flat in cross section, winged
BRACT: violet (RHS 75B) with purple red (RHS N57C) at base, elliptic shape, convex in cross section, entire margin, weak undulation of margin, acuminate tip
PEDICEL: blue pink (RHS 63B), square in cross section
SECONDARY PEDICEL: blue pink (RHS 63B), square in cross section
FLOWER: mean of 24 mm in diameter
CALYX: coalescent type, ovary enclosing, purple red (RHS N57C), no lobes
COROLLA: four to five petals, fleshy, arrangement of petals is not touching
PETAL: blue pink (RHS N66D), ovate shape, asymmetrical, straight in cross section, weakly incurved to straight along longitudinal axis, entire margin, rounded tip
STAMEN: yellow, incurved along longitudinal axis
ANTHER: yellow, elongated with hair-like purple threads
STYLE: white, incurved along longitudinal axis
OVARY: superior placement, white (RHS 155A), round shape, flattened tip

Origin & Breeding History: 'Royal Zenz' was bred and developed by the breeders, Nicolaas D.M. Steur and Elly Bak, employees of Corn. Bak B.V. in Assendelft, Netherlands. It originated from a controlled cross conducted in September 2008 between two numbered proprietary selections. Seedlings were selected in May 2010 from the resulting progeny based on their flower colour, number of inflorescences per plant, plant size, leaf size, and plant growth characteristics. 'Royal Zenz' was selected for commercialization in January 2012 and first propagated using asexual reproduction by cuttings in May 2012, in Assendelft, Netherlands.

Tests & Trials: The detailed description of 'Royal Zenz' is based on the UPOV report of Technical Examination, application number 2012/2582, purchased from the Community Plant Variety Office in Angers, France. The trials were conducted by Naktuinbouw in Roelofarendsveen, Netherlands, in 2013. Colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

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Royal Zenz
Medinilla: 'Royal Zenz'

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