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Hortus
most recent 20 SEP HIDE POSTS
 
Initial post 20 SEP by Hortus
Parentage: ´Proschwitzer Schloßrose´ X unnamed hybrid from the Wichuriana group (Rambler) by Hans-Peter Bethke (Germany).
Here Photo of pollen parent "Weiße von Saxdorf":
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most recent 30 MAR HIDE POSTS
 
Initial post 29 MAR by Hortus
Rosa nanothamnus is only referred to as a synonym to Rosa giraldii in "Catalog of Life".
http://www.catalogueoflife.org/col/details/species/id/a23ab7e47e9975a7793f4d13789145e5/synonym/c67a6e247499a0ed6825664bc6185c8e

Would not it be appropriate to combine the data on both taxa with HMF?

I would also suggest separating the sterile hybrid form from the Europa Rosarium Sangerhausen / Germany and recording it separately.
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Reply #1 of 5 posted 29 MAR by Andrew from Dolton
Some of the pictures of this rose look far taller than the 15 to 50 centimetres in the description.
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Reply #2 of 5 posted 30 MAR by jedmar
Rosa nanothamnus Boulenger has been listed as a subform of Rosa giraldii by Brumme & Gladis in the "Wildrosenverzeichnis" of the Rosarium Sangerhausen (p. 95). While we have listed this as a synonym, this publication gives no explanations on why this (and other) regrouping(s) was(were) made, which is a significant deficiency from a botanical viewpoint. It is quite possible that the Brumme & Gladis attributions will be questioned.
Furthermore, there are other varieties of Rosa giraldii, the type being Rosa giraldii var. giraldiii. Therefore it is better to Keep Rosa nanothamnus and Rosa giraldii separate.
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Reply #3 of 5 posted 30 MAR by Andrew from Dolton
I see, the whole description is some what confusing, it says "White, near white or white blend Species" then further down says "pink". All the photographs show plants with strong pink coloured flowers.
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Reply #4 of 5 posted 30 MAR by jedmar
The original description by Boulenger says "petals pink or white". The ARS colour classes are not always reliable, but are cited here. We have modified HMF's description to pink and white, too, thank you. Please also see the comment by Hortus, that the plant in Sangerhausen is actually a sterile hybrid. It is a general problem that wild roses in many Botanical Gardens are not the type, but some sort of seedlings. We cannot sort this out at HMF, but only show photos from different sites (and hope that some botanist will make a publication on the subject one day).
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Reply #5 of 5 posted 30 MAR by Andrew from Dolton
It is a very unusual and interesting rose.
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most recent 9 FEB HIDE POSTS
 
Initial post 8 FEB by CybeRose
Flora Taurico-Caucasica: Supplementum, tome 3, p. 339 (1819)
Bieberstein

974 ROSA ferox
R. germinibus subglobosis pedunculis petiolisque hispidis, caule hispido: aculeis copiusis sparsis, primariis validis curvis basi dilatato-incrassatis, foliolis subrotundo-ovatis subtus glanduloso rubignosis, grosse serratis: serraturis glanduloso-serrulatis. Marsch. cent, plant, rar. rossic. 1. t. 37. Laurent. Rosae 42. Aiton kew. ed. 2. P. 3. p. 268.
R. provincialis. Flor. taur. cauc. n. 974. (exclusis synonymis.)
R. horrida. Catal. hort. gorenk. a. 1812. p. 66. Besser catal. hort. crem. a. 1816. p. 117.

https://books.google.com/books?id=wxAoAAAAYAAJ&dq=%22Flora%20taurico-caucasica%22&pg=PA339#v=onepage&q&f=false
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Reply #1 of 2 posted 8 FEB by Hortus
Rosa biebersteinii Lindl. is Synonym for Rosa turcica :

http://www.catalogueoflife.org/col/details/species/id/3ae1751b4dd38c59fe75a8274468aa93/synonym/1f48766a4b125d02e616d4e121188bb3
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Reply #2 of 2 posted 9 FEB by CybeRose
It seems that Bieberstein had a rather vague notion of this species. He cited Lawrance's R. ferox (supposedly R. rugosa), as well as the other two.
Karl
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MemberHortus
most recent 11 NOV 16 HIDE POSTS
 
Initial post 11 NOV 16 by Jay-Jay
A nice-one and friendly looking seedling this: MX 13
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