Patent Publication Number: US-PP27089-P3

Title: Medinilla hybrid plant named ‘ROYAL ZENZ’

Description:
Latin name of the genus and species:  Medinilla  hybrid. 
     Variety denomination: ‘ROYAL ZENZ’. 
     BACKGROUND OF THE INVENTION 
     The present invention relates to a new and distinct hybrid cultivar of  Medinilla  plant, botanically known as  medinilla  sp., hereinafter referred to by the cultivar name ‘ROYAL ZENZ’. The genus of  Medinilla  belongs to the Melastimataceae family. 
     The new  Medinilla  ‘ROYAL ZENZ’ is a product of a planned breeding program conducted by the inventor. Ely Bak and Nico D. M. Steur, in Assendelft, The Netherlands. The objective of the breeding program is to develop a new  Medinilla  variety with good growing habit and attractive inflorescence. 
     The New  Medinilla  ‘ROYAL ZENZ’ originated from a cross made in the controlled breeding progeam by the inventors in 2008, in Assendelft. The Netherlands. The female or seed parent is the  Medinilla  selection designated ‘834918227’ (unpatented), and the male or pollen parent is the  Medinilla  selection designated ‘834927015’ (unpatented). ‘ROYAL ZENZ’ was discovered and selected by the inventors in 2010, as a single flowering plant within the progeny of the stated cross in a controlled environment in Assendelft, The Netherlands. 
     Asexual reproduction of the new  Medinilla  hybrid ‘ROYAL ZENZ’ performed by vegetative means by cuttings was first performed in 2010, in Assendelft, The Netherlands. The first ‘ROYAL ZENZ’ plants propagated through the use of the cuttings flowered in 2011, in Assendelft, The Netherlands, and have demonstrated that the combination of characteristics as herein disclosed for the new cultivar are firmly fixed and retained through successive generations of asexual reproduction. The new cultivar reproduces true-to-type. 
     BRIEF DESCRIPTION OF THE INVENTION 
     The following traits have been repeatedly observed and are determined to be unique characteristics of ‘ROYAL ZENZ’ which in combination distinguish this  Medinilla  hybrid as a new and distinct cultivar:
         1. Solid growth habit.   2. Erect shrub plant, measuring about 20 cm in height (above the pot when first flowering);   3. Green colored leaves, measuring about 25 cm in length and about 11-13 cm in width;   4. Pendulous panicles with red-purple (RHS 68A) colored flowers;       

     COMMERCIAL COMPARISON 
     Of the many commercial cultivars known to the present inventors, the most similar in comparison to the new  Medinilla  ‘ROYAL ZENZ’ is the  Medinilla  ‘MAGNIFICA’. Plants of the new  Medinilla  ‘ROYAL ZENZ’ differ from plants of  Medinilla  ‘MAGNIFICA’ primarily in leaf size and bract size. Additionally plants of ‘ROYAL ZENZ’ have a coloured inflorescence. 
     PARENT COMPARISON 
     Plants of the new  Medinilla  ‘ROYAL ZENZ’ differ from plants of the female parent in inflorescence. The new variety produces more inflorescence per plant. Additionally, inflorescence of the new variety are darker than those of the seed parent. 
     Plants of the new  Medinilla  ‘ROYAL ZENZ’ differ from plants of the male parent in plant habit. Plants of the new variety are significantly more compact than plants of the pollen parent. 
    
    
     
       BRIEF DESCRIPTION OF THE PHOTOGRAPHS 
       The accompanying photograph illustrates the overall appearance of the new  Medinilla  ‘ROYAL ZENZ’ showing the colors as true as is reasonably possible with colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describes the color of ‘ROYAL ZENZ’. 
         FIG. 1  shows a side view perspective of a typical potted flowering plant of ‘ROYAL ZENZ’ at about 50 weeks from potting. 
         FIG. 2 . shows a side view perspective of a typical flower of ‘ROYAL ZENZ’ at about 50 weeks from potting. 
     
    
    
     DETAILED BOTANICAL DESCRIPTION 
     ‘ROYAL ZENZ’ has not been observed under all possible environmental conditions. The phenotype of the new cultivar may vary with variations in environment such as temperature, light intensity, day length, fertilizers and humidity without any change in the genotype of the plant. 
     The aforementioned photograph, together with the following observations, measurements and values describe the new  Medinilla  ‘ROYAL ZENZ’ as grown in a greenhouse in Assendelft, The Netherlands, under conditions which closely approximate those generally used in commercial practice. 
     Color references are made to The Royal Horticultural Society Colour Chart (R.H.S.), 2001 Edition, except where general colors of ordinary significance are used. Color values were taken under daylight conditions in a greenhouse in Assendelft, The Netherlands. The age of the plants of ‘ROYAL ZENZ’ described is about 50 weeks from potting.
     Classification:
             Botanical.—Medinilla  sp. ‘ZENZ’.       
       Parentage:
             Female parent.—Medinilla  selection designated ‘834918227’ (unpatented).     Male parent.—Medinilla  selection designated ‘834917015’ (unpatented).       
       Propagation: Cuttings.   Plant:
             General appearance and form .—Height: About 20 cm. Diameter: About 50 cm. Shape: Erect shrub.     Growth habit .—Stem.     Plant vigor .—Good.     Flowering season .—From April till October.     Cold tolerance .—Frost tender, temperatures below 5C may damage plants.     Fragrance .—None.       
       Foliage:
             Quantity .—About 20.     Size .—Length: About 25 cm. Width: About 11-13 cm.     Overall shape .—Elliptical.     Apex shape .—Cuspidate.     Base shape .—Acute.     Margin .—Slightly Undulate.     Texture .—Smooth.     Color .—Leaf color can vary somewhat depending on growing conditions. Upper Surface: Glossy green, ranges between RHS 139A. Lower Surface: Green, closest to RHS 143A.     Venation .—Sunken.       
       Inflorescence:
             Shape .—Pendulous panicles.     Amount .—About 6 (depending on the size of the plant).     Size .—Length: About 32 cm. Width: About 15 cm.     Color .—Red-purple, closest to RHS 68A.     Corolla .—Number: more than 150 per panicle.     Petals .—Number: 4 or 5 per flower. Length: 12 mm. Width: 7 mm. Overall Shape: obovate, asymmetrical. Apex Shape: obtuse. Color: Upper Surface: red-purple, closest to RHS 155D. Lower Surface: red-purple, closest to RHS 155D. Sepals: growth together. enclosing the ovary. Color: red-purple, closest to RHS 66D. Bracts: Quantity: 4 per crown. Arrangement: verticillate. Size: Length: about 15 mm-7 cm. Width: less than 6 mm-6 cm. Overall Shape: elliptical.       
       Reproductive organs:
             Androecium .—Stamen: Number: 8-10 per flower. Length: 7 mm. Diameter: 1 mm. Color: light yellow, with a white base (too small to qualify RHS value). Anther: Length: 10 mm. Color: violet, closest to RHS 88A, with a yellow base (too small to qualify RHS value). Pollen: not visible. Gynoecium: Pistil: Number: 1 per flower. Length: 14 mm. Stigma: Width: &lt;1 mm. Color: white, too small to qualify RHS value. Style: Length: 11 mm. Color: White, closest to RHS 155B. Ovary: Shape: round. Position: inferior. Length: 3 mm. Diameter: 3 mm. Color: white closest to RHS 155C.       
       Seeds: No seeds produced.   Fruits: No fruit produced.   Disease/pest resistance: No observations made to date.   Disease/pest susceptibility: No observations made to date.