EVIfour
| Denomination: | 'EVIfour' |
|---|---|
| Trade name: | Royal Velvet |
| Botanical Name: | Clematis |
| Applicant/Holder: |
Poulsen Roser International S.A.R.L. Broze F. 81600 Gaillac France |
| Breeder: |
Raymond J. Evison, Raymond J. Evison Ltd., Yale, Guernsey, United Kingdom |
| Agent in Canada: |
Miller Thomson Pouliot LLP 1000 De La Gauchetière Street West, Suite 3700 Montréal, Quebec H3B 4W5 Canada Tel: 514-871-5449 |
| Application Date: | 1995-12-22 |
| Application Number: | 95-684 |
| Grant of Rights Date: | 2003-01-06 |
| Certificate Number: | 1336 |
| Date rights surrendered: | 2013-04-18 |
Variety Description
Variety used for comparison: 'Ruby Glow'
Summary: 'Evifour' is a climbing clematis variety which flowers on new and old wood. There is weak undulation on the margins of the sepals of 'Evifour', whereas 'Ruby Glow' has no undulation. The main distinguishing characteristic of 'Evifour' is the colour of the flowers which is a deeper violet than 'Ruby Glow' (RHS 86A for 'Evifour' compared with RHS N82A for 'Ruby Glow').
Description:
'Evifour' is a climbing, non-clinging clematis variety which has pale green young leaves. The stem surface is brown and ribbed. The mature leaves are ternate. The terminal leaflet is lanceolate in shape, with an entire margin, acute base and acute to acuminate apex. The number of lobes ranges from none to two. The mature leaflet is medium to dark green and very weakly glaucous, with fine pubescence.
'Evifour' flowers in spring to early summer on old wood and later in the season on new wood. The flowers are single, solitary, erect to semi-erect in attitude and flat in profile. The flower centre is open. 'Evifour' has parallel, thin stamens. The filament has a white base with a pink-red apex and the anthers are red.
'Evifour' has six to eight, thin, smooth sepals which are obovate to elliptic in shape, with entire margins and weak undulation. In cross section the sepals are mostly flat. The sepals of 'Evifour' are overlapping. The sepal apex is acuminate and the tip is moderately to strongly recurved. 'Evifour' has violet coloured sepals with a red-purple central bar.
Origin & Breeding History: 'Evifour' originated from a polycross made at Guernsey Clematis Nursery, Guernsey, U.K. Subsequent reproduction was by virus tested cuttings.
Tests & Trials: Tests and trials for 'Evifour' were conducted at Linwell Gardens, Beamsville, Ontario during the spring of 2001. The trial consisted of 8 plants of the candidate variety and 6 plants of the reference variety. All plants were in 25 cm containers and grown in a greenhouse. Observations and measurements were made on 10 parts of either 6 or 8 plants.
Comparison tables for 'EVIfour' with reference variety 'Ruby Glow'
Length of blade of terminal leaflet (cm)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| mean | 7.3 | 7.8 |
| standard deviation | 1.4 | 1.0 |
Width of terminal leaflet (cm)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| mean | 2.6 | 3.4 |
| standard deviation | 0.4 | 0.5 |
Flower diameter (cm)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| mean | 11.99 | 12.35 |
| standard deviation | 1.5 | 1.1 |
Length of sepal (cm)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| mean | 6.9 | 6.3 |
| standard deviation | 0.47 | 0.52 |
Width of sepal (cm)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| mean | 3.7 | 3.0 |
| standard deviation | 0.3 | 0.3 |
Main colour of sepal (RHS)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| upper side | 86A - N88 fading to 90A | N82A fading to 92A-B |
| lower side | 86C-D | N82C-D |
Secondary colour of sepal (RHS)
| 'EVIfour' | 'Ruby Glow' | |
|---|---|---|
| central bar on upper side | 71A - N81A | N78A - N78C |
| central bar on lower side | 75B-C | 155B |
- Date modified: