Sansevieria flowers

That's a lovely MIL's tongue.
Wikipedia tells me that it is pollinated by moths 
also that

a flowered plant will no longer produce new leaves

but luckily it will produce new off shoots.

I hadn't got as far as Mr Wikki, but that is useful info    I haven't sniffed the flowers yet either, so I will do so when I get home from work 

The other whorls of leaves in the pot do look like they have got baby leaves growing in  the centres, so maybe it will just be that whorl that doesn't grow now    I shall have to keep an eye on it.

The 2 plants are huge and have distorted the plastic pots they are in so much that I can't get them out of the ceramic pot covers without smashing them. 

I was told they do better in confined root spaces, just leave alone and water and feed sparingly.  Mine are waxing fat on that treatment for sure 

Well it took a whole month, but the flowers are now starting to open fully.  I can't smell any scent by day, but I'll try tonight and see if they release scent then