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'R. polyantha grandiflora' rose Reviews & Comments
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Moschata = Moscata. There is a separate listing for a "Rosa Moscata major" syn. Rosa major Grandiflora, This should be merged with Rosa Moschata et al. , even the reference photo for one of the "Rosa Moscata" contains the "h"--> "moschata"
Because it is normally pronounced phonetically "moscata" people leave out the "h" sometimes (as the sign I took at the Mills garden a few years ago).
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#1 of 2 posted
18 NOV 19 by
 jedmar
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These are two distinct roses with the same name. Rosa moscata major was a historic form of Rosa moschata with large, single nlooms; but seems to have gone extinct. 'Moschata Grandiflora' is a cultivar of Bernaix from 1886. We'll add some detail to make the difference more apparent. Three photos on the listing of Rosa moscata major have to be moved to Rosa moschata.
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Oh, the sign at the Mills was spelled without the "h", which must have been a typo. Bella Donna took over its spot,
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Would this be the same rose referred to in Roy Sheperd's History of the Rose, p.28 in the Coleman reprint?
"MOSCHATA GRANDIFLORA--This hybrid between R. moschata and R. multiflora was raised by Bernaix in 1866. A rampant grower producing large, single white flowers with numerous beautiful golden stamens. Very fragrant." Nothing about rebloom or not, and nothing about if the flowers were produced in clusters.
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#1 of 1 posted
23 OCT 19 by
jedmar
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It is. There are different versions of the parentage in literature.
We have followed the version where R. multiflora Thunb. is replaced by R. polyantha, which was a hybrid multiflora from Japan used by breeders in Lyon to create the first Polyanthas. It is not synonymous with R. multiflora, as iis descendant were totally different than the earlier hybrids of R. multiflora Thunb.
Instead of R. moschata we have the Noisette 'Blanc Pur' which Bernaix states he used.
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There seems to be two different roses here.
The old illustrations together with photos from Margaret Furness and Cass seems to represent one type, possibly the original 'Polyantha Grandiflora'.
Most of the other ones fit Rosa cerasocarpa.
Any comments on this?
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#1 of 2 posted
31 DEC 13 by
jedmar
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Please note that R. cerasocarpa is not an accepted taxon. It is not listed in "Flora of China" or other newer sources. The naming sees to have occurred based on one or very few specimens, and not a broad study on site.
Rosa gentiliana Lév. & Van is seen today as a synonym of R. multiflora var. cathayensis.
Rosa gentiliana Rehd. & Will. is subsumed under Rosa henryi Boulenger.
Graham Thomas himself has admitted that he distributed 'Polyantha Grandiflora' mistakenly as R. gentiliana, although he does not state which R. gentiliana.
I would therefore not make a large issue of small differences in photos, until botanists have made further studies in China. It is more probable that a known cultivar, i.e. 'Polyantha Grandiflora' was distributed widely in commerce than obscure species.
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#2 of 2 posted
1 JAN 14 by
Tessie
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I do not know much about this rose but recently bought two young plants in 4 inch pots from Colvos Creek Nursery, http://www.colvoscreekdesigns.com/catalog-2/catalog-q-z/ which specializes in drought tolerant plants for the northwest. The possibility of drought tolerance here, where our droughts are likely more intense, was enough for me to give this rose a try. They were huge upon arrival (in October) for that size pot. So big that the canes had to be wrapped around the inside of the box. The nursery owner discounted them because he said they'd been munched on by deer. Only thing missing was some foliage. Even so they looked really good. I transferred them to 1 gallon pots and both have taken off. Foliage is a nice shade of green and completely healthy so far in rust and mildew heaven. From what I've seen so far, this rose is eager to climb.
I'll take some more pictures soon (but they may already be dormant like most of my roses), so I may wait until new foliage appears.
The photo below show the two Polyantha Grandifloras along with two plants of Rosa cantabrigiensis (the shorter, leafier ones).
Melissa
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Parentage is r. multiflora Thunb. x Blanc Pur
Source: Alexandre Bernaix.
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#1 of 1 posted
4 JAN 08 by
Cass
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