Language selection




Denomination: 'Jroxfroja'
Trade name: Charmed Jade
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: 05-4535
Grant of Rights Date: 2007-08-17
Certificate Number: 2826
Date rights surrendered: 2014-08-17

Variety Description

Variety used for comparison: 'Alba'

Summary: Leaves of 'Jroxfroja' are larger and the leaflets have larger terminal lobes than those of 'Alba'. 'Jroxfroja' has some anthocyanin colouration on the stems, whereas 'Alba' has none. 'Jroxfroja' has larger flowers than 'Alba'. The corolla of 'Jroxfroja' is white with a purple blush, whereas that of 'Alba' is white only.


PLANT: upright to semi-upright, presence of basal branching
STEM: light green, weak to moderate anthocyanin colouration from the base to the middle of the stem, no pubescence

LEAF: very shallow to shallow incision of leaflet lobe, no variegation, medium to dark green on upper side, medium green on lower side, no pubescence

CALYX: light green
INFLORESCENCE: scapose umbel, average of 4.2 open flowers
COROLLA: rotate to funnel form, white on upper and lower side with a purple blush, weakly to moderately conspicuous light green veins
ANTHERS: yellow and brown

Origin & Breeding History: The new oxalis variety 'Jroxfroja' 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 'Jroxfroja' 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 26, 2006. All colour measurements were made using the Royal Horticultural Society (RHS) Colour Chart 2001.

Comparison tables for 'Jroxfroja' with reference variety 'Alba'

Leaf diameter (cm)

  'Jroxfroja' 'Alba'
mean 8.4 4.9
std. deviation 0.64 0.16

Length of terminal lobe of leaflet (cm)

  'Jroxfroja' 'Alba'
mean 3.9 2.6
std. deviation 0.34 0.09

Width of terminal lobe of leaflet (cm)

  'Jroxfroja' 'Alba'
mean 5.9 3.0
std. deviation 0.69 0.12

Length of calyx (cm)

  'Jroxfroja' 'Alba'
mean 6.4 4.2
std. deviation 0.52 0.42

Diameter of corolla (mm)

  'Jroxfroja' 'Alba'
mean 25 20.9
std. deviation 2.62 2.02

Length of corolla tube (mm)

  'Jroxfroja' 'Alba'
mean 11.3 6.3
std. deviation 1.16 0.82

Length of corolla lobe (mm)

  'Jroxfroja' 'Alba'
mean 21.7 15.7
std. deviation 1.16 0.95

Width of corolla lobe (mm)

  'Jroxfroja' 'Alba'
mean 8.4 6.4
std. deviation 0.52 0.52

Main colour of leaf (RHS)

  'Jroxfroja' 'Alba'
upper side greyer than 147A 137B-C
lower side 138A-B greyer than 138B-C

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

Date modified: