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BOTANICAL EXPLORATION IN VENEZUELA - I 241
at the base, while the margin and keel of the pitchers on the outside
are red. The lid appendage is red or purple-red. The flowering
stalks arise at the base of the plant, the scapes and flowering pedicels
being dark red or wine red. The outer sepals vary from pale
green or greenish-white with rose-pink at the base to a rosy color in
age; there may be a midline of pink or rose color on the outer sepals.
The inner sepals are usually white within, or may be whitish-pink on
both sides. They are usually paler green in age. The pubescent
ovary is generally pale green in color.
It is interesting to record another new species in this genus to the
five previously known. From a genus originally considered as monotypic,
six Species are at present known, three (H. Maedonaldae, H.
Tatei, and //.
Tyleri) known only from Mount Duida, and each of the
others (H. nutans, H. minor, and H. heterodoxa) known only respectively
from Mount Roraima, Mount Auyan-tepui, and Mount Ptari-tepui'.
Undoubtedly, several more will eventually be discovered when all of
the tepuis have been carefully explored. Heliamphora heterodoxa is
most closely related to H. nutans Benth. of Mount Roraima and to
H. minor Gleason of Mount Auyan-tepuu It differs from them in having
longer anthers (5.5-8 mm. instead of 3-4 mm. long) and in the
extent of pubescence of the upper pubescent zone on the inside of
the upper pubescent zone on the inside of the pitcher, the zone of
pubescence in H. heterodoxa occupying the upper half of the pitcher,
whereas in H. minor and H. nutans this zone covers the upper onethird.
A key to the species at present known is here given:
Pitchers expanded in the middle and constricted above and below
the middle; pedicels slender, drooping
Anthers 5.5-8 mm. long; upper pubescent zone on inside covering
about the upper half of the pitcher
H. heterodoxa.
Anthers 3-4 mm. long; upper pubescent zone on inside covering
the upper one-third of the pitcher
Pedicels pubescent; sepals 2-3.2 cm. long; pitchers scarcely
expanded in middle; wings of pitchers more or less
equally broad from base to apex; lid appendage abruptly
narrowed at base, suborbicular; pitcher 10-12 cm. long.
//. minor.
Pedicels glabrous; sepals 3.5-5 cm. long; pitchers conspicuously
expanded at middle into a flared bell-like form;
wings of pitchers abruptly narrowed below the middle and
again appearing above the middle; lip appendage inconspicuous
and passing directly into the upper part of die
pitcher, or conspicuous and suborbicular to orbicular with
abrupt constriction at base or not all at constricted;
pitcher 13-30 cm. long
H. nutans.
Pitchers barely or not at all expanded in the middle, with an elongated
tubular form; pedicels stout, erect