Hi Mandy.
I have seen dozens of Coryanthes flower spikes ...
And while I agree that the photographs do show something which looks like a flower spike,
it does not at all look like a real CORYANTHES flower spike.
I guess (emphasize guess) that it could be some mis-formed leaf growth of a Coryanthes Plant,
the misformation caused by a sudden change of (e.g.) temperature.
Or, it could be the flower spike of a man-made inter-generic hybrid plant ...
Has this plant flowered before ?
'acrathe' is probably deemed to mean C. macrantha ...
Anyhow, it would be nice to see some photographs again, sometime next month, thank you
.