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Denomination: 'Jroxblavel'
Trade name: Charmed Velvet
Botanical Name: Oxalis regnellii
Applicant/Holder: Retkes, Jozsef
Szent Imre h. u. 12/A
Breeder: József Retkes, Retkes, Jozsef, Szombathely, Hungary
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2005-02-09
Application Number: 05-4537
Grant of Rights Date: 2007-10-10
Certificate Number: 2950
Date rights surrendered: 2013-11-27

Variety Description

Variety used for comparison: 'Zinfandel'

Summary: Plants of 'Jroxblavel' have larger leaves than 'Zinfandel'.'Jroxblavel' has longer pedicels and larger corollas than 'Zinfandel'. The main colour of the corollas of 'Jroxblavel' is white with a purple blush, whereas it is yellow orange on the upper side and light yellow on the lower side for 'Zinfandel'.


PLANT: upright to semi-upright, presence of basal branching

STEM: light green, very weak anthocyanin colouration at the base of the stem, absent to very weak pubescence

LEAF: terminal location on shoot, shallow incision of lobe, no variegation, purple-black on upper side, dark purple on lower side, no pubescence on upper side, moderate pubescence in between veins of the lower side

CALYX: light green
INFLORESCENCE: scapose umbel, average of 3.6 open flowers
COROLLA: rotate to funnel form, white on upper and lower side with a purple blush, very weakly conspicuous veins
ANTHERS: yellow and brown

Origin & Breeding History: The new oxalis variety 'Jroxblavel' was developed by the breeder Józseph Retkes in Szombathely, Hungary. It originates from a seedling selected from Oxalis regnellii in Hungary in 1993. The final selection was made in 2001 based on flower colour, foliage colour and excellent longevity.

Tests & Trials: The test and trial for 'Jroxblavel' was conducted in a polyhouse during the spring of 2006 at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants of each variety. Rooted cuttings were transplanted into 15 cm pots on April 25, 2006. Observations and measurements were taken from 10 plants of each variety on June 27 to 30, 2006. All colour measurements were made using the Royal Horticultural Society (RHS) Colour Chart 2001.

Comparison tables for 'Jroxblavel' with reference variety 'Zinfandel'

Leaf diameter (cm)

  'Jroxblavel' 'Zinfandel'
mean 7.0 2.9
std. deviation 0.65 0.23

Length of terminal lobe of leaflet (cm)

  'Jroxblavel' 'Zinfandel'
mean 3.3 1.5
std. deviation 0.23 0.12

Width of terminal lobe of leaflet (cm)

  'Jroxblavel' 'Zinfandel'
mean 4.4 1.4
std. deviation 0.44 0.07

Length of pedicel (cm)

  'Jroxblavel' 'Zinfandel'
mean 2.1 1.0
std. deviation 0.41 0.20

Diameter of corolla (mm)

  'Jroxblavel' 'Zinfandel'
mean 20.5 15.4
std. deviation 3.11 0.84

Length of corolla tube (mm)

  'Jroxblavel' 'Zinfandel'
mean 9.6 6.7
std. deviation 1.35 0.67

Length of corolla lobe (mm)

  'Jroxblavel' 'Zinfandel'
mean 18.6 11.9
std. deviation 1.78 0.74

Main colour of leaf (RHS)

  'Jroxblavel' 'Zinfandel'
upper side more purple than 202A N200A and N187A blended
lower side N79A 187A-B

Main colour of corolla (RHS)

  'Jroxblavel' 'Zinfandel'
upper side N155B 13B
lower side N155B 13D

Click on image for larger view
Oxalis: 'Jroxblavel' (left) with reference variety 'Zinfandel' (right)

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