Chamelaucium uncinatum--`Cascade Brook`

- Newports Nurseries

A new and distinct variety of Chamelaucium uncinatum plant, named `Cascade Brook`, particularly charaterized by having an erect plant with numerous secondary stems which gracefully weep. Larger than normal flowers occur in summer and winter, with petals in a range of appealing, light to medium purple shades, and having dark purple nectaries.

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Description
BACKGROUND INFORMATION

This invention relates to a new and distinct variety of Chamelaucium uncinatum which is referred to herein as the new variety "Cascade Brook". "Cascade Brook" was bred by breeders T P Angus and N F Derera, both of 244 Singles Ridge Road, Winmalee, New South Wales, 2777, Australia.

"Cascade Brook" resulted from a controlled pollination carried out on 10 March 1988 between Chamelaucium uncinatum variety GW23 (seed parent) by Chamelaucium uncinatum variety GW8 (pollen parent). "Cascade Brook" was selected in March 1991 on the basis of flowering time, petal colour, nectary colour, flower size and plant habit. "Cascade Brook" was shown to be stable through two vegetatively propagated generations. The breeding and subsequent characterization of "Cascade Brook" were carried out at Winmalee, New South Wales, Australia.

"Cascade Brook" is most notable for its predominance of mature petal colour R.H.S. No 75A, its large flower diameter (mean greater than 18 millimeters), its biannual flowering habit (winter and summer) and its predominant mature nectary colour of R.H.S. No 187C.

"Cascade Brook" has been vegetatively propagated by means of striking plant cuttings at the above-noted location, at Winmalee, New South Wales, Australia. Examination of various "Cascade Brook" plants has confirmed that the combination of characteristics described herein are firmly fixed throughout successive generations.

DESCRIPTION OF THE DRAWINGS

"Cascade Brook" is illustrated by the accompanying photograhic drawings:

FIG. 1: Is a photographic print in full colour showing a single potted specimen of "Cascade Brook" which was planted in approximately January 1994. The photograph was taken in June 1994 and the plant is approximately 25 centimeters high.times.35 centimeters wide.

FIG. 2: Is a photographic print in full colour which compares flowers "Cascade Brook" (signified "GW53"), with comparative Chamelaucium uncinatum variety "Pink" (GW24). The figure shows petal coloration from young flower to aged flower.

DESCRIPTION OF THE NEW VARIETY

The following is a detailed description of the "Cascade Brook" with colour designations according to the Horticultural Colour Chart issued by the British Colour Council in collaboration with The Royal Horticultural Society Copyright 1938. The observed traits have been repeatedly observed and are believed to be characteristic of "Cascade Brook" which, in combination, distinguish "Cascade Brook" as a new and distinct cultivar.

Locality: "Cascade Brook" was grown and observed at Newport Nurseries, Winmalee, New South Wales, Australia.

Propagation: By cutting.

Parentage: Controlled pollination of Chamelaucium uncinatum GW23 (seed parent) by Chamelaucium uncinatum GW8 (pollen parent).

Growth habit: Erect plant habit with cascading or weeping new growth, particularly when grown under conditions such as 25.degree. C. to 30.degree. C. day/15.degree. C. to 18.degree. C. night temperatures with high nutrition.

Shape: When grown in a glasshouse with weekly nutrient supply the plants develop a spreading semi-erect habit with new growth weeping/hanging down from the more erect firm older growth.

Size: When grown in 130 millimeter pots in a glasshouse with nutrients supplied weekly approximate dimension twelve months from rooted cutting are:

Height.--60 to 75 centimeters.

Width.--60 to 75 centimeters.

Line growth: High branching frequency on main stem and side branch. Medium to high branching frequency on side branches.

Foliage: Mature leaflets at branched node with length 40 to 55 centimeters; diameter of approximately 1 millimeter, opposite, linear, almost terete with spreading hooked apex, spreading to reflexed, and glabrous. Colour R.H.S. No 146A (yellow-green colour group).

Flowers: Flowering is biannual with flowering between December to March (summer flowering) and July to September (winter flowering). Characteristics of flowering are as follows:

Summer flowering.--Flower diameter: Mean about 18.4 millimeters. Mature petal colour: R.H.S. No 77C 84C. Mature nectary colour: R.H.S. No 183A 187 AB.

Winter flowering.--Flower diameter: Mean about 18.6 millimeters. Mature petal colour: R.H.S. No 75A. Mature nectary colour: 187C.

Flower size is large compared to other Chamelaucium uncinatum. The petal outline is notched and the petal margin is undulate. The predominate floral tube outline is conical.

In the northern hemisphere flowering results would generally be the reverse of that set out above. Summer flowering results would be observed between July to September and winter flowering results would be observed between December to March.

Comparisons of summer and winter flowering based on twenty plants are set out in Table 1.

                TABLE 1                                                     
     ______________________________________                                    
     CHARACTERISTICS OF                                                        
     CHAMELAUCIUM UNCINATUM CASCADE BROOK                                      
                             CASCADE                                           
                CASCADE BROOK                                                  
                             BROOK                                             
                Summer Flowering                                               
                             Winter Flowering                                  
     ______________________________________                                    
     PLANT HABIT  Cascading      Cascading                                     
     FLOWERING TIME                                                            
                  December/January/                                            
                                 August/                                       
     (50% bud burst)                                                           
                  February       September                                     
     BUD COLOUR                                                                
     With Operculum                                                            
     Colour       Red            Red                                           
     RHS No       41A 42C        41A 42C                                       
     Without Operculum                                                         
     Colour       Purple         Purple                                        
     RHS No       77BC           77C                                           
     FLORAL TUBE,                                                              
     MID-REGION                                                                
     Colour       Green or yellow                                              
                                 Yellow-green or                               
                  green or red-  red-purple                                    
                  purple                                                       
     RHS No       59B 143C 144A  59B 144A                                      
     FLOWER                                                                    
     DIAMETER (mm)                                                             
     Mean         18.6           20.8                                          
     Range        17.8-19.6      19.1-22.0                                     
     PETAL                                                                     
     Outline      Obovate        Obovate                                       
     Immature colour                                                           
     Colour       Purple         Purple                                        
     RHS No       75C 77CD       75A                                           
     Colour Development                                                        
                  Fast           Fast                                          
     Mid-mature colour                                                         
     (% to 15 days after                                                       
     bud burst)                                                                
     Colour       Purple or violet                                             
                                 Purple or violet                              
     RHS no       75AB 84BC      75AC 84C                                      
     Petal                                                                     
     Mature Colour (ca 20                                                      
     days after bud burst)                                                     
     Colour       Purple or violet                                             
                                 Purple                                        
     RHS No       77C 84C        75A                                           
     NECTARY                                                                   
     Immature colour                                                           
     Colour       Green          Yellow-green                                  
     RHS No       141C 143AC     149B                                          
     Mature colour                                                             
     Colour       Greyed-purple  Greyed-purple                                 
     RHS No       183A 187AB     187C                                          
     STAMINODIA                                                                
     Outline      Narrow tri-    NT                                            
                  angular (NT)                                                 
     Mature collar colour                                                      
     Colour       White          White                                         
     RHS No       155D           155D                                          
     STYLE COLOUR                                                              
     Immature colour                                                           
     Colour       Red-purple or white                                          
                                 White                                         
     RHS No       64D 70C 155D   155D                                          
     Mid-mature colour                                                         
     Colour       Red-purple or white                                          
                                 White                                         
     RHS No       64D 70C 155D   155D                                          
     Mature colour                                                             
     Colour       White          White                                         
     RHS No       155D           155D                                          
     CALYX LOBE                                                                
     Mid-mature colour                                                         
     Colour       Red-purple     Red-purple                                    
     RHS No       62D 65C 73D    65C 73D                                       
     Mature colour                                                             
     Colour       Purple         Purple                                        
     RHS No       76D            76D                                           
     FLORAL TUBE                                                               
     Outline      Conical        Conical                                       
     Fluting      Present        Present                                       
     Diameter (mm)                                                             
     Mean         8.45           9.2                                           
     Range        7.9-9.0        8.7-9.8                                       
     Mid-point colour                                                          
     Colour       Yellow-green   Yellow-green                                  
                  or green                                                     
     RHS No       143C 144BC 145A                                              
                                 144C                                          
     FLOWER       Broad distal (BD)                                            
                                 BD                                            
     ARRANGEMENT                                                               
     FLOWER       Present        Present                                       
     FRAGRANCE                                                                 
     ______________________________________                                    

The characteristics of "Cascade Brook" were compared with the closest known Chamelaucium uncinatum variety "Pink". Observations were made during the winter of 1992 and summer of 1992/1993 from ten plants of each of "Cascade Brook" and "Pink". The plants were selected at random in June 1992 from twelve months old plants grown in a glasshouse at Winmalee, New South Wales, Australia. Results are set out in Table 2.

                TABLE 2                                                     
     ______________________________________                                    
     DRAFT COMPARISON TABLE                                                    
                                CASCADE                                        
                  "PINK"        BROOK                                          
     CHARACTER    GW24          GW53                                           
     ______________________________________                                    
     FLOWERING TIME                                                            
                  Medium        Early and medium                               
                  July to September                                            
                                January to March                               
                                July to September                              
     FLOWERING                                                                 
     DIAMETER (MM)                                                             
     Mean         18.1          18.4                                           
     Std deviation                                                             
                  0.953         0.872                                          
     No measured  20            20                                             
     PETAL COLOUR                                                              
     Immature     75 with margins of                                           
                                75A with margins of                            
                  155D          155D                                           
     Mature       75A with margins of                                          
                                75A with margins of                            
                  155D          72C                                            
     NECTARY                                                                   
     COLOUR                                                                    
     Immature     149B          149B                                           
     Mature       186B          187C                                           
     FLOWER       Broad distal  Broad distal                                   
     ARRANGEMENT                                                               
     ______________________________________                                    

Claims

1. A new and distinct Chamelaucium uncinatum plant substantially as shown and described herein, distinguished principally from other varieties of its type by biannual flowering, petal colour, mature nectary colour and flower size.

Patent History
Patent number: PP9509
Type: Grant
Filed: Mar 16, 1995
Date of Patent: Apr 16, 1996
Assignee: Newports Nurseries
Inventors: Timothy P. Angus (Faulconbridge), Nicholas F. Derera (Winston Hills)
Primary Examiner: James R. Feyrer
Law Firm: Christie, Parker & Hale
Application Number: 8/405,211
Classifications
Current U.S. Class: Plt/541
International Classification: A01H 500;