Sansevieria.

Just because it was collected before the type of Sans. sinus-simiorum that does not mean it cannot be the same species.

Picture of it in flower shows it is definitely Sans. sinus-simiorum not Sans. hallii.

You are right THANKS again. and your explanation io goooood , Cok.

Please check Journal ISS 2-may 2001, p7 issjournal 3 p24-25, sinus simiorum. Could you tell the difference between them?
check Journal 2 again and page 19. S. sp Zimbabwe
This seeds came in 1989 and Sinus simiorum was found in 1994 by David and this have no wide leaf end , David mailt me that it must be a form of hallii.
Cok.

it's definitely 'Super Bat' S. sinus-simiorum

I agree with Peter, this picture is S. Siniu Simiorum, it is totally different with S. Scimitariformis as far as i know.

Last year I obtained a plant from a friend with the label "Sans from Dyke and Shamva". I believe the plant was grown by Hermine Stover here in California from seed that may have come from Richards. The plant had a huge capitate inflorescence a few years ago. The base of the leaves is "D" shaped narrowing to a blade at the tip. I'm pretty sure its scimitariformis. I can provide photos if you email me.

I think this might be a S. sinus-simiorum.

it is a plant from Zimbabwe !! not from S.
Malawi

Can "Malawi Bat" be a form of scimitariformis?

I do not think, Malawi Bat is not so big and the leaves are more round. but, Never seen grown up plants.
Cok