Orange Xenox


Denomination: 'Orange Xenox'
Botanical Name: Hylotelephium spectabile
Applicant/Holder: Future Plants Licentie B.V.
Turfspoor 53A
2165 AW
Breeder: Hubertus Gerardus Oudshoorn, Rijpwetering, Netherlands
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2011-01-27
Application Number: 11-7169
Grant of Rights Date: 2013-09-05
Certificate Number: 4616
Grant of Rights Termination Date: 2031-09-05

Variety Description

Varieties used for comparison: 'Twinkling Star' and 'Yellow Xenox'

Summary: The plants of 'Orange Xenox' are taller than those of both reference varieties and wider than those of 'Twinkling Star'. The inflorescence of 'Orange Xenox' are larger than those of 'Yellow Xenox'. The secondary colour on the upper side of the petals of 'Orange Xenox' is brown purple while that on 'Twinkling Star' is light yellow brown and than on 'Yellow Xenox' is yellow.


PLANT: vegetatively reproduced, perennial, upright-bushy growth habit, medium branching
STEM: purple, strong anthocyanin colouration, absent or very weak glaucosity, absent or very sparse pubescence, medium thickness, smooth

LEAF: opposite arrangement, simple, ovate, acute apex, cordate base, dentate margin, absent or very sparse pubescence on upper and lower sides, absent or very weak glaucosity on upper side, dark green (RHS 144A-B) with brown purple (RHS 184B-C) anthocyanin colouration on the upper side, no variegation, no petiole

INFLORESCENCE: late flowering, medium to long flowering period, cyme, terminal position, erect attitude
PETAL: very open arrangement, few, small, elliptic, upper and lower sides light yellow brown (RHS 159C-D) to white (RHS N155D) with brown purple (RHS 185D) at base

Origin & Breeding History: 'Orange Xenox' originated from a population of seedlings created from the hybridization of 'Xenox' and 'Sunkissed' at Rijpwetering, The Netherlands in the summer of 2007. The new variety was selected in the summer of 2008 from the population of seedlings based on plant habit, flower form and foliage colour.

Tests & Trials: Trials for 'Orange Xenox' were conducted at Variety Rights Management in Oxford Station, Ontario during the summer of 2012. The trial consisted of 15 plants of 'Orange Xenox', 11 plants of 'Twinkling Star' and 11 plants of 'Yellow Xenox' with one plant per pot. The pots were 22 cm in diameter and were spaced approximately 45 cm apart. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Orange Xenox' with reference varieties 'Twinkling Star' and 'Yellow Xenox'

Plant height (cm)

  'Orange Xenox' 'Twinkling Star' 'Yellow Xenox'
mean 29.17 26.35 25.10
std. deviation 1.94 1.60 1.41

Plant width (cm)

  'Orange Xenox' 'Twinkling Star' 'Yellow Xenox'
mean 28.33 24.50 28.50
std. deviation 4.13 2.88 1.91

Inflorescence diameter (cm)

  'Orange Xenox' 'Twinkling Star' 'Yellow Xenox'
mean 11.07 10.72 8.42
std. deviation 1.23 1.64 0.97

Colour of upper side of petal (RHS)

  'Orange Xenox' 'Twinkling Star' 'Yellow Xenox'
secondary 185D 158B 7D

Click on image for larger view
Orange Xenox
Sedum: 'Orange Xenox' (centre) with reference varieties 'Yellow Xenox' (left) and 'Twinkling Star' (right)

Click on image for larger view
Orange Xenox
Sedum: 'Orange Xenox' (centre) with reference varieties 'Yellow Xenox' (left) and 'Twinkling Star' (right)

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