P. esseriana complex
P. ehlersiae, P. esseriana, P. jaumavensis ... and P. debbertianaBefore Fernando's Mexican trips in 2003/2004, I thought (or thought I knew) that distinguishing P. esseriana and P. ehlersiae was "easy".
And came P. jaumavensis, a close species of P. esseriana.
Comparaison between P. esseriana (left) and P. jaumavensis (right) in Vic Brown's culture. Photo : Vic Brown |