Plants – Rose – Climber
Plant Patent
1999-06-14
2001-10-09
Campell, Bruce R. (Department: 1661)
Plants
Rose
Climber
Plant Patent
active
PP012132
ABSTRACT:
BACKGROUND OF THE INVENTION
This new invention presents a distinct cultivar of a
Vinca minor
and will be referred to hereafter by the cultivar name ‘Illumination’.
Vinca minor
is an evergreen, suffrutiscent creeping vine that is used commercially as a ground cover.
The new cultivar was discovered in the inventor's garden in Newport, Wash. in 1995. ‘Illumination’ was isolated from a branch sport arising in a patch of common, green-leafed
Vinca minor
(unpatented). It is distinguished by it's variegated foliage consisting of yellow to cream colored centers surrounded by dark green margins. The mature stems are also unique in that they are greyed purple in color.
No other known cultivar, known to the inventor, has a coloration that is similar to this new cultivar ‘Illumination’. There are two cultivars of periwinkle that are available in the trade with gold variegation; ‘Golden’ and ‘Blue and Gold’, both of which have thin gold margins and green centers. Another cultivar, ‘Valley Glow’, has leaves that emerge a gold color, but then the leaves turn green upon maturation.
The original asexual propagation of ‘Illumination’ was done by the inventor in Newport, Wash. using compound layering of the branch sport in the spring of 1995. The new cultivar has subsequently been propagated by stem cuttings and has remained stable and true to type in successive generations since it's discovery.
SUMMARY OF THE INVENTION
The new cultivar ‘Illumination’ is unique and unlike any other lesser periwinkle known to the inventor. The coloration and pattern of the variegation is the primary distinguishing characteristic of this new cultivar. The variegation is stable and is comprised of creamy colored centers with dark green margins. There is some variation in the pattern and central color during leaf maturation. The young, emerging foliage has bright green centers. As the leaves mature, the centers become more yellow in color and finally mature to a creamy yellow. The center coloration typically comprises 75-85% of the leaf area. The stems mature to a greyed purple color that is not usually observed in the species. The flowers are lavender-blue which is typical for the species. These traits in combination distinguish this periwinkle as a unique cultivar.
REFERENCES:
patent: P.P. 6960 (1989-08-01), MacKenzie
patent: P.P. 8170 (1993-03-01), Perrine
UPOV-ROM GTITM Computer database 2000/04, GTI JOUVE Retrieval Software, citation for “Illumination”, Aug. 2000.
Baker W A
Campell Bruce R.
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