Bulb. mandibulare is a very interesting species, quite recently rediscovered. I have seen many in Sabah, they grow in the same forest as the blue lipped den. cinnabarinum and cleisoscentron merrillianum...
They are endemic to Sabah, but the original description appears to be dated. 1882.
Jo Levey in Memphis TN has a good sized awarded specimen (don't know when it was awarded or how long she's had it). This plant came to me from Howard Gunn's collection (after going through the hands of two different society members). I don't know how long Howard has had this species either.
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