Agave filifera ssp microceps (Syn Agave filifera fma compacta)
Plant and Photo: Robert Stephenson, Australia

Robert Stephenson
Yesterday, whilst having a poke around the garden, I had a look at one of my agaves, Agave filifera ssp microceps (Syn A. filifera fma compacta) and was amazed to see that the head had divided dichotomously. I haven't heard of this before, so out with the digital and took the attached photo of the plant dividing. Look carefully at the centre of the rosette for this phenomenon. There are two definite heads, going in opposite directions.
The other photo is an earlier one of the same plant for comparison.

(c) Photograph Copyright of The Amateurs' Digest and Robert Stephenson, Australia