Arctic circle..Svalbard...wild flower. I thought Cerastium/stellaria maybe. But got no where. My pic shows a very interesting seed pod. see pic 3. Then researching found this incredible web site...phyto images. The detailed pics in the library are superb. Cerastium (Chickweed, Mouse Ear Chickweed, Snow-In-Summer) - 122 images at PhytoImages.siu.edu images, phylogeny, nomenclature for Cerastium (Caryophyllaceae) Help please folks.
I think Cerastium arcticum (Arctic mouse-ear chickweed or Arctic mouse-ear). There are a couple of photos of it from Svalbard. I saw a photo saying "Arctic chickweed" flash up on this page: Arctic Wildflowers | M.A. Willson, but then it disappears so it only appears every now and then. The name was part of the jpg, so I can't search for it in the page source. I came up with the name by querying "arctic chickweed", but that common name might not be unique to this species. Still, here's a photo: File:Cerastium arcticum upernavik 2007-06-26 2.jpg - Wikimedia Commons
Thanks wcutler. That was my first thoughts... Flowers are a perfect match...it is that blackish round seed pod that is throwing me...see pic 3 On WWW See these ones gone to seed ...elongated seed pods...hence my thread. https://nature.ca/aaflora/images/cacearu1.jpg http://www.digitalnaturalhistory.com/images/cerastiumcfbeergrandi2cartwrightradarbaseaug22003.jpg http://www.natureconservancy.ca/ass...s/mouse-ear-chickweed-teva-harrison-slide.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/Cerastium_arcticum_Snöarve_03.jpg/1200px-Cerastium_arcticum_Snöarve_03.jpg Stellaria longipes flowers look identical...but seed capsule again differs. http://svalbardflora.no/assets/images/species/Stellaria_longipes/Stellaria_longipes_close_full.jpg https://nature.ca/aaflora/images/castlou2.jpg
Well, you know how little I know about this. But I wonder if what you are calling a seed pod is really unopened leaves. Compare it to the single leaf in the upper right that's down from the white flower. I found two pages that might be of interest: Flora of Svalbard - Cerastium arcticum - The Flora of Svalbard Another possibility, Cerastium bialynickii, which eFlora says is "very different" (I hate it when they say that), mentioning a small calyx, so maybe it would not be this one. Cerastium bialynickii in Flora of North America @ efloras.org
