I scanned a few texts on Nepenthes and cannot find references to Gunung Kenan. If it's 2800 meters, and a Nepenthes habitat, it would certainly seem significant.
I agree with Jeff about the "Kelam"- simple misspelling on a tag...However, Gunung Kelam is hardly 2800 meters (isn't it about 900 meters at its highest point?) Other than clipeata, I think the other species found are rafflesiana, reinwardtiana, and gracilis.
But then again, maybe there really is a Gunung Kenan.
Could it be a typo for Gunung Kemiri in north Sumatra?
Oliver Marthaler collected seed of an unidentified Nep there in 1996 at between 2600 and 2900m.
I've seen the resulting plants sold as Nepenthes nova Kemiri.