A young Paphiopedilum sanderianum plant
My Paph sanderianum recently shed a leaf, revealing that the bulge I had noticed last month was simply a root nub. With the loss of this leaf, the orchid returns to exactly the same size it was when I first received it over a year ago. Since last September, it has shed two leaves, and completed growing two new ones. I'm not sure if this is what to expect from the species, but at this rate, I don't know how it will ever reach blooming size. Maybe the calcium supplements I added last month will kick in and help the newest leaf grow longer than the previous leaves. Otherwise, this orchid is growing new leaves just fast enough to make up for shedding the old ones.