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Rosa glauca
Glaucous Dog Rose
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Photographer: Dr. Amadej Trnkoczy
ID: 0000 0000 0618 0082 (2018-06-03)Copyright © 2018 Dr. Amadej Trnkoczy
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Jun 25, 2008
latitude 45.92286 longitude 13.84985
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location
Mt. Mala Gora, 1.032 m (3.386 feet), Čaven ridge, central part of Mala Gora plateau; Vipava valley (Goriška, Slovenia)notes Slo.: rdečelistni šipek - syn.: Rosa rubrifolia Vill., Rosa ferruginea Gren. - Habitat: mountain dry grassland; calcareous ground; slightly inclined mountain slope, south aspect; warm, open and sunny place; elevation 1.010 m (3.300 feet); average precipitations 1.800-2.000 mm/year, average temperature 7-9 deg C, borderline between sub-Mediterranean and Dinaric phytogeographical region. - Comment: Wild dog roses (genus Rosa) are beautiful and well known plants. Their bushes, carrying numerous tender flowers of white, pink, different shades of red or yellow color, are wonderful decoration of stony meadows, wood edges as well as woods from lowland to high mountains. They are easily recognized on genus level. Unfortunately, the situation on species level is just the opposite – frequently very difficult! There are many species in this genus, all are very variable and frequently form hybrids. 22 species are known in Slovenia hybrids, intermediate forms and cultivars, which escaped in the wild not counted. Many morphological traits must be considered in determination process. To reliably determine some of them one has to visit the plant two times, when in bloom and again when in fruit (two or three months later) because examination of hips is also necessary. - Rosa glauca seems to be an exception in this respect. It can be quite readily recognized, not by some small morphological detail, but much more from general appearance. Mature bushes are stout, of dense growth and appear in the whole reddish, not only because of plenty of pink-purple flowers but also because of red branches and reddish 'leaves'. Actually, in spite of the plant's vernacular name in many languages, the leaves are reddish only when very young, then the leaflets become dark blue-green and only veins, leaflets borders and rachis (the main axis of the compound leaves) of the leaflets remain reddish. Anyway, the whole bushes have a characteristic, rather dark, reddish color, which can be noticed even from far. - Ref.: (1) M.A. Fischer, W. Adler, K. Oswald, Exkursionsflora für Österreich, Liechtenstein und Südtirol, LO Landesmuseen, Linz, Austria (2005), p 522. (2) A. Martinči et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnična Založba Slovenije (2007), p 276. (3) H. Haeupler, T. Muer, Bildatlas der Farn- und Bluetenpflazen Deutschlands, Ulmer (2000), p 231. (4) D. Aeschimann, K. Lauber, D.M. Moser, J.P. Theurillat, Flora Alpina, Vol. 1., Haupt (2004), p 738.camera Nikon D70 /Nikkor Micro 105mm/f2.8
contributor's ID # Bot_277/2008_DSC0623 photo category: Plant - annual/perennial
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MORE INFORMATION ABOUT THIS PLANT
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| common names
Glaucous Dog Rose, Red-leaved Rose (photographer)
View all photos in CalPhotos of Rosa glauca Check Google Images for Rosa glauca |
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The photographer's identification Rosa glauca has not been reviewed. Click here to review or comment on the identification. |
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Using this photo The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2018 Dr. Amadej Trnkoczy.
For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT]siol.net. (Replace the [AT] with the @ symbol before sending an email.) |
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