Martin Ravn Posted December 6, 2020 Report Share Posted December 6, 2020 There's a form of Drosera filiformis in culture from Virginia. Can anyone tell more about the origin of this plant and maybe give a more precise location of origin? Martin Quote Link to comment Share on other sites More sharing options...
Podunk Posted December 8, 2020 Report Share Posted December 8, 2020 Hi Martin, those D.filformis in VA are not native but naturalised. I'm not sure where they originally came from. There are also naturalised populations in WV, OH, PA, MD, CA and other states. Most of them originate from the NJ pine barrens, but who knows for sure. Some were planted illegally so there are no records, some were planted on private property. So you would have to ask the owners. Eric Quote Link to comment Share on other sites More sharing options...
Christian Posted January 24, 2021 Report Share Posted January 24, 2021 Hi Eric, are you sure, that there are no natural populations of D. filiformis in Virginia? Christian Quote Link to comment Share on other sites More sharing options...
Marcel van den Broek Posted January 24, 2021 Report Share Posted January 24, 2021 It is introduced according to this: http://www.efloras.org/browse.aspx?flora_id=1 "Drosera filiformis is disjunct in the outer Coastal Plain, from Nova Scotia and Connecticut to Maryland, southeastern North Carolina, and Bay and Washington counties, Florida. The species has been reported from South Carolina, but no specimens from there have been seen. It is introduced in Caroline County, Virginia, and Preston County, West Virginia, and possibly other localities peripheral to its range." Quote Link to comment Share on other sites More sharing options...
Podunk Posted January 25, 2021 Report Share Posted January 25, 2021 (edited) Hi Christian, I could be wrong and there is always that "bird migration argument" that is used to connect the disjunct populations and could also be used to explain temporary populations in between. But presently I'm pretty sure that there are no native populations of D.filformis in VA. Do you have any good reason to believe there are any? There are no historical records for D.filiformis in VA, but many cases of deliberate introductions of non-native CPs in that state. It is known that D.filiformis was naturalised in Prince George’s Co., MD already before 1947. Another population was found much later in Charles Co., MD, and it is assumed that it may also be introduced or spread from the former site. This is close to the VA border. There are reports Rafinesque found D.filiformis in Sussex Co., Delaware in 1804 (type + Glocester Co., NJ), but presently no known native populations. No other native populations are nearbye. Of course there are many native sites in NJ and a few in Southeastern NC. Eric Edited January 25, 2021 by Podunk Quote Link to comment Share on other sites More sharing options...
Christian Posted February 12, 2021 Report Share Posted February 12, 2021 Hi, interesting, i did not know that and was under the impression, that there are natural populations of D. filiformis in Virginia. Especially as i have plants with "Virginia" as location in my collection since many years. Christian Quote Link to comment Share on other sites More sharing options...
Podunk Posted February 12, 2021 Report Share Posted February 12, 2021 Hi Christian, I don't doubt your label, but it does not say whether those filiformis are native or naturalised. There are herbarium sheets dated 1928 stating D.filiformis was introduced to Prince George’s Co., MD. So some introductions are old, some were gone some time later again, others may still exist. I know Phil S. introduced D.filiformis to Caroline Co., VA around 1982. Did you get your plants earlier than that? Eric Quote Link to comment Share on other sites More sharing options...
Martin Ravn Posted February 14, 2021 Author Report Share Posted February 14, 2021 Thank you for the ansver Eric. Quote Link to comment Share on other sites More sharing options...
Christian Posted February 15, 2021 Report Share Posted February 15, 2021 Hi Eric, thanks! I got my plants sometime around 2000 i think. I did definitely not know what a carnivorous plant is in 1982 :) And of course, the label doesn't say that natural populations exist and i do not have any reason to assume, there are natural populations in VA. I just never got aware of the disjunct distribution and was surprised to hear about that. Is there any explanation as to why there are no plants in VA? This somehow doesn't really make sense. I have seen D. filiformis in NC, but have never been more north than VA. Are the northern forms different from those in the south? Christian Quote Link to comment Share on other sites More sharing options...
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