After my friend, Ori Fragman-Sapir uploaded the wonderful rare southern Adder's-Tongue fern,
I decided to reply with the Northern, less rare but still rare and endangered (at least in Israel), Least Adder's-Tongue fern.
The plant's entire size is about 2 cm.
''Ophioglossum lusitanicum'', the least adder's-tongue, is a small fern of the family Ophioglossaceae. It is a pan-tropically species categorised as least concern by the IUCN .