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'R. semperflorens' rose Description
'<i>Rosa chinensis</i> var. <i>semperflorens</i> (Curtis) Koehne' rose photo
Photo courtesy of jedmar
Availability:
Commercially available
HMF Ratings:
213 favorite votes.  
Average rating: EXCELLENT.  
ARS:
Medium red Species.
Registration name: Slater's Crimson China
Exhibition name: R. chinensis
Origin:
Bred by Unknown Chinese Breeder(s) (China, before 1658).
Discovered by Unknown (before 1733).
Introduced in United Kingdom by Gilbert Slater in 1789 as 'R. semperflorens'.
Introduced in Australia by John J. Rule, Victoria Nursery in 1858 as 'Crimson China Rose'.
Class:
Bermuda Rose, China / Bengale, Species / Wild.  
Bloom:
Crimson.  None / no fragrance.  Medium to large, semi-double to double, reflexed bloom form.  Occasional repeat later in the season.  Glandular sepals buds.  
Habit:
Short, bushy.  Large, glossy, dark green foliage.  5 to 7 leaflets.  

Height: 2' to 4'11" (60 to 150cm).  
Growing:
USDA zone 7b through 10b.  Vigorous.  Requires spring freeze protection (see glossary - Spring freeze protection) .  
Patents:
Patent status unknown (to HelpMeFind).
Ploidy:
Diploid
Parentage:
If you know the parentage of this rose, or other details, please contact us.
Notes:
R. chinensis Jacq. Observ.bot 3:7, t.55 (1768).
The ancestor of all our repeat-blooming Modern Garden Roses.
L'Haÿ labels 'Rose du Bengale' as a Bourbon by Kerr (1879).

[Rosa chinensis var. semperflorens (W. M. Curtis) Koehne (1893)
The introduction date of ca. 1789 in "Hortus Kewensis" points to an importation on the "Triton" or "Carnatic". see Gilbert Slater. Currently, there are different roses in trade under this name.- see References.]

According to "Flora of China", the varieties chinesis and semperflorens are distinct lower taxa.
 
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