Black decorative grass in flower- name escapes me!

I like this black grass (Ophiopogon Nigrescens) and would never remember the proper name!
Btw, looks like a big slug is heading to the flowers in the centre ... :o(

Thank you for naming this lovely grass. I picked it off and fed it to the birds. Am a bit more relaxed nowadays about slugs & snails. I have been know to go hunting for them at night with my bucket & torch to my husbands amusement! Lol

Black grass sounds weird but it sets off other plants so well! I use it in a winter hanging basket with primulas, violas, crocuses and iris reticulata + danfordiae to soften the edges of the basket. Yours looks full of vigour; so far mine hasn't flowered, I must try harder :-)

Oh Amsterdam, I did do that once but then thought perhaps Frogs would devour them!