johns Posted August 22, 2009 Report Share Posted August 22, 2009 (edited) Went on a trip today to a bog in Østmarka, the forested area to the east of Oslo. The bog: On basically every square meter of bog you can see grew round-leafed sundew. It was nearly impossible to avoid stepping on them. In the middle of the bog was a wetter area, where I found english/great sundew. Aquatic sundews? :) I also found the below plants, which I think are D. x obovata, the natural hybrid between round-leafed and english sundew. It's not easy to tell whether one has found x obovata or intermedia, to me they look very much the same. Supposedly intermedia has stripes on the seed capsule, and the flower stalks emerge from the side of the rosette (in the hybrid it emerges in the middle). Unfortunately I didn't remember to check, and I can't tell from the pictures. These grew in a slightly different place. Same as the ones above? Edit: fixed round-leafed sundew URL. Edited January 17, 2010 by johns Quote Link to comment Share on other sites More sharing options...
rsivertsen Posted August 22, 2009 Report Share Posted August 22, 2009 Great to see Norwegian Drosera again! Also, I'm glad you found D. anglica as far south as Oslo! I was unable to find any south of Norfjord a couple years ago, although D. rotundifolia was everywhere in shpagnum bogs along with P. vulgaris; perhaps you saw a few of them too in these areas. They are supposed to grow with P. alpina, but I never found any in my searches, which were mostly around Bergen, my home town. Yes, that is D. obovata! I never found ANY D. intermedia in Norway at all, (their leaves are narrower). Where I found D. anglica and D. rotundifolia growing together, these D. obovata hybrids were not uncommon. Amazing how the D. anglica grew in such wet areas, sometimes underwater or by small streams in very wet detritus. - Rich Quote Link to comment Share on other sites More sharing options...
Daniel O. Posted August 22, 2009 Report Share Posted August 22, 2009 Really nice location. Thanks for sharing. Best regards, Dani Quote Link to comment Share on other sites More sharing options...
LJ Posted August 22, 2009 Report Share Posted August 22, 2009 Great report and some excellent pics of drosera in habitat - thanks for sharing with us Heather Quote Link to comment Share on other sites More sharing options...
johns Posted August 22, 2009 Author Report Share Posted August 22, 2009 Great to see Norwegian Drosera again! Also, I'm glad you found D. anglica as far south as Oslo! I was unable to find any south of Norfjord a couple years ago, although D. rotundifolia was everywhere in shpagnum bogs along with P. vulgaris; perhaps you saw a few of them too in these areas. They are supposed to grow with P. alpina, but I never found any in my searches, which were mostly around Bergen, my home town. Yes, that is D. obovata! I never found ANY D. intermedia in Norway at all, (their leaves are narrower). Where I found D. anglica and D. rotundifolia growing together, these D. obovata hybrids were not uncommon. Amazing how the D. anglica grew in such wet areas, sometimes underwater or by small streams in very wet detritus. - Rich I've only recently started to get interested in CPs, so I haven't looked that much, but my impression so far is that D. anglica is quite common in sunny bogs with wet areas like you see on the pictures. I found D. anglica and D. x obovata last weekend as well on another bog, and I know of a third bog where they grow (all in Østmarka). Unfortunately I didn't see P. vulgaris there. They do grow in Østmarka, but they don't seem to be as easy to find as sundew. I have seen P. vulgaris in two places in Østmarka, but I didn't find them by myself (I had the GPS coordinates, from artsobservasjoner.no). From what I've been told P. vulgaris is more common further north and in higher altitudes. At one of the P. vulgaris locales they grew alongside D. rotundifolia, but from what I've read P. vulgaris prefers medium to rich bogs, and doesn't grow in nutrient-poor bogs (like sundew does). I'm actually slightly more interested in finding butterworts. :) There has been quite a bit of rain recently, so the bog on the pictures is probably a lot wetter than usual. Thanks for the nice comments. :) Quote Link to comment Share on other sites More sharing options...
rsivertsen Posted August 22, 2009 Report Share Posted August 22, 2009 I found hundreds of P. vulgaris near sea level in a few islands just west of Bergen growing with D. rotundifolia in various sphannum pits where several aquatic Utrics also occurred in small ponds. I found more Pings in and near Voss, in higher elevations, but no D. anglica, perhaps they grew there, I just didn't find any in the short time I had there. I heard that P. alpina and possibly P. villosa grew there, but all I found were D. rotundifolia in sphagnum, and P. vulgaris growing in gravel and near small stream embankments. - Rich Quote Link to comment Share on other sites More sharing options...
dudo klasovity Posted August 22, 2009 Report Share Posted August 22, 2009 All these pictures of CP in their natural habitat are really fascinating and beautiful. Thanx for sharing! :-) Quote Link to comment Share on other sites More sharing options...
johns Posted January 17, 2010 Author Report Share Posted January 17, 2010 I visited the bog again today, to see how it looks like during the winter. It's been a nice winter so far here in Oslo; I think there was about 30 cm of snow covering the bog, insulating the plants (hibernacula) from the freezing temperatures. So far this winter temperatures have been as low as -20 degrees celsius (-3 today). I tried to take pictures approximately where I took pictures back in august. Enjoy. :) Overview of the bog, winter: Summer: English sundew area, winter: Summer: Approximately where a cluster of D. x obovata grow, winter: Summer: A tree in the forest: Quote Link to comment Share on other sites More sharing options...
Binataboy Posted January 18, 2010 Report Share Posted January 18, 2010 Wow that looks amazing, we do not get a lot of snow in Australia. I would be interested to know how cold the ground gets under the snow. I know snow insulates but it would still have to be bellow freezing. I wonder how cold the Drosera can go? Cheers George Quote Link to comment Share on other sites More sharing options...
johns Posted January 28, 2010 Author Report Share Posted January 28, 2010 Wow that looks amazing, we do not get a lot of snow in Australia. I would be interested to know how cold the ground gets under the snow. I know snow insulates but it would still have to be bellow freezing. I wonder how cold the Drosera can go? From http://soil.scijournals.org/cgi/content/abstract/67/4/1234 : Snow kept the soil warm and reduced soil temperature variability, but often this caused soil to remain near 0°C, resulting in more freeze–thaw events under snow at one or more soil depths. During the ‘cold snowy’ winter, soils under snow had daily averages consistently >0°C, whereas snow-free soil temperatures commonly dropped below -3°C. This may also be of interest: http://scienceandsarcasm.blogspot.com/2005...-does-snow.html Quote Link to comment Share on other sites More sharing options...
d.portlandensis Posted December 19, 2019 Report Share Posted December 19, 2019 I know this thread is a decade old, but it is linked on cpphotofinder, so it would be nice if the images were not dead links. Quote Link to comment Share on other sites More sharing options...
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