Patent Publication Number: US-PP29025-P3

Title: Yucca plant named ‘TUSZYUC001’

Description:
Botanical designation:  Yucca gloriosa.    
     Variety denomination: ‘TUSZYUC001’. 
     SUMMARY OF THE INVENTION 
     The present invention constitutes a new and distinct variety of  yucca  plant which was discovered in a cultivated, protected greenhouse area in Warsaw, Poland. The new  yucca  variety resulted from a naturally occurring mutation of unknown causation on a branch of  Yucca gloriosa  ‘Variegata’, a non-patented variety. The resulting mutation was selected and evaluations were conducted on the resulting  yucca  plants in a controlled environment. 
     The  yucca  plant of the present discovery has a unique combination of characteristics which are outstanding in the new variety and which distinguish it from the original  yucca Yucca gloriosa  ‘Variegata’ as well as all other varieties which we are aware of. For example, ‘TUSZYUC001’ has marginal intonations on the leaves the color of Red-Purple Group 58B. The original  Yucca gloriosa  Variegata has marginal leaf coloration of primarily Yellow Group 4D. Additionally the new variety is more compact than the original variety. 
     The criteria used to evaluate the claimed plant were selected in order to introduce a distinct variety for garden and container use with unique qualities, such as:
         1. Uniform and abundant foliage with unique purple brown coloration;   2. Vigorous, but compact growth when propagated in-vitro;   3. Exceptional disease resistance.       

     This combination of qualities is not present in previously available commercial cultivars of this type, known to the inventor, and distinguish ‘TUSZYUC001’ from all other varieties of which we are aware. 
     Asexual reproduction of ‘TUSZYUC001’ by basal shoot cuttings in vitro was first done by Grzegorz Tuszynski in Warsaw, Poland in July of 2011. Plants were deflasked and rooted in ordinary peat-based growing medium. This initial and other subsequent propagations have demonstrated that the characteristics of ‘TUSZYUC001’ are stable and reproduced true to type in successive generations of asexual reproduction. 
    
    
     
       DESCRIPTION OF THE DRAWING 
       The accompanying color illustrations show as true as is reasonably possible to obtain in color photographs of this type, the typical characteristics of ‘TUSZYUC001’. 
       Specifically illustrated in  FIG. 1  of the drawings are  yucca  plants in containers, showing overall appearance and colors of leaf variegation. 
       Specifically illustrated in  FIG. 2  of the drawings are mature and juvenile leaves. Plants shown are approximately 2 years of age and were cultivated in a glasshouse in Warsaw, Poland. 
     
    
    
     DETAILED DESCRIPTION OF THE VARIETY 
     The following is a description of ‘TUSZYUC001’,as observed in its growth in in a glass house in Warsaw, Poland. Observed plants are 2 years of age and grown in 24 cm containers. Color references are made using The Royal Horticultural Society (London, England) Colour Chart, 2001, except where common terms of color are used. 
     For a comparison, physical characteristics of similar  yucca  variety ‘WALBRISTAR’ described in U.S. Plant Pat. No. 17,653 are compared to ‘TUSZYUC001’ in Chart 1. 
     
       
         
           
               
               
               
             
               
                 CHART 1 
               
               
                   
               
               
                   
                 ‘TUSZYUC001’ 
                 ‘WALBRISTAR’ 
               
               
                   
               
             
            
               
                 Secondary color of leaf  
                 Red-Purple Group 58B 
                 Yellow 13A 
               
               
                 blade margins upper surface 
                   
                   
               
               
                 Plant height 
                 35 cm 
                 50 cm 
               
               
                   
               
            
           
         
       
         
         Plant description:
             Blooming habit .—Not observed to date. No flowers have been produced. No fruit or seed have been produced to date.     Plant habit .—Upright, semi-erect.     Plant height .—About 35 cm.     Plant width .—About 35 cm.       
     
         Foliage:
             Foliage type .—Evergreen.     Quantity of leaves.— 25 to 40.     General leaf shape .—Lanceolate with broadest section toward the top.     Leaf shape cross section .—Distally concave.     Leaf blade attitude .—Semi-erect.     Leaf apex .—Acute.     Leaf base .—Truncate.     Leaf arrangement .—Spiral.     Shape of apical spine .—Triangular.     Variegation pattern .—Parallel.     Leaf margins .—Entire.     Leaf surface texture .—Smooth.     Leaf width .—About 5 cm.     Leaf length .—About 30 cm.     Mature leaf coloration .—Upper: Green Group 137B and Yellow-Green Group N144A. Marginal intonations of Red-Purple Group 58B and Yellow Group 2D. Lower: Yellow-Green Group N144A with marginal intonations of Red-Purple Group 58B and Yellow Group 2D.     Juvenile leaf coloration .—Upper: Green Group 137B and Yellow-Green Group N144A. Marginal intonations of Greyed-Purple Group 183D, Red-Purple Group 58B and Yellow Group 2D. Lower: Yellow-Green Group N144A with marginal intonations of Greyed-Purple Group 183D and Yellow Group 2D. Leaf coloration remains the same throughout the growing season.     Disease resistance .—Average resistance leaf spot  Cercospora concentrica  or  Coniothyrium concentricum.