In contrast, "N. bokorensis" has a variable but persistent indumentum covering all vegetative and floral parts, "N. kerrii" has a persistent indumentum restricted to the leaf axils, "N. kongkandana" has persistent hairs covering the whole plant, and "N. suratensis" has a caducous indumentum up to 0.3 mm long covering the entire upper part of the plant.
In contrast, "N. bokorensis" has a variable but persistent indumentum covering all vegetative and floral parts, "N. kerrii" has a persistent indumentum restricted to the leaf axils, "N. kongkandana" has persistent hairs covering the whole plant, and "N. suratensis" has a caducous indumentum up to 0.3 mm long covering the entire upper part of the plant.