Nepenthes Pitchers Not Opening: Likely Judith Finn, Not sanguinea

A grower's Nepenthes (sold as sanguinea) produces pitchers that brown at the lid tips before opening. Grown in humidity tray, distilled water, watered when slightly damp.

Diagnosis

Plant looks healthy; may just need time. However, it resembles N. × 'Judith Finn' (slow-growing, needs warmth/humidity), not sanguinea. A batch mislabeled as sanguinea last year turned out to be 'Judith Finn'. Provide warm, humid conditions for best results.