Cerastium alpinum

[BubikolRamios1]

Google translate says 'skin margin at the top of leaf'. What are we looking at ? Explanation.
Darker tip means nothing I think, some images on net have no dark tip.
http://www.blumeninschwaben.de/Zweikeim ... riffel.htm

tmp.jpg (48.62 KiB) 72 mal betrachtet

[Anagallis]

The proper translation is "upper bracts without scarious tip". Wouldn't take that too serious; most keys don't use this characteristic, and it's hard to see anyway.