N. veitchii is an excellent choice! Typically, leaves grow up to 25 cm in length, and pitchers
may be as much as 20 cm high. According to Clarke, this species is found from sea level
to 1500 m, but rarely above 1300 m. Therefore, specimens from higher elevations are
perhaps more intermediate than true highland.
Note, however, that there are varieties of this species from elevations above 1000 m which
do NOT exhibit a striped peristome. Therefore, the absence of such striping does not mean
that a specimen is necessarily a lowland variety.