downloads/Killip 2.pdf - Passion Flowers

540 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. XIX
This species is characterized by the unusual form of the operculum,
which is regularly lobed about one-third its length; the lobes are
ovate-spatulate. Poeppig and Endlicher describe the operculum as
being in two series, the outer (upper) filamentose and the inner
(lower) a lobate, incised-dentate membrane, but this structure is not
shown either by the type specimen or by the Ducke one, which is in
fine condition for study.
Passiflora Guedesii, described from material collected farther down
the Amazon, appears conspecific with P. Candida, as pointed out by
Ducke. The leaves are proportionately longer, but the peculiar form
of the operculum is the same.
328. Passiflora hexagonocarpa Barb. Rodr. Vellosia 1: 24. 1891;
3, pt. 1: pi. 9. 1891.
Scandent shrub with a few tendrils, essentially glabrous throughout,
only the ovary pubescent; petioles 1.5 to 2 cm. long; leaves
ovate-lanceolate or oblong-lanceolate, 5 to 8 cm. long, 2 to 5 cm.
wide, obtuse, rounded at base, penninerved (lateral nerves 6 to 8 to a
side, the midnerve biglandular at base), coriaceous, bright green and
lustrous on both surfaces, prominently reticulate; peduncles solitary,
1 to 3 cm. long; calyx tube broadly funnel-shaped, 2 to 2.5 cm. long,
nearly 2 cm. wide at throat; sepals ovate-lanceolate, 1.5 to 2 cm. long,
about 1 cm. wide at base, subobtuse, conspicuously nerved, green
without, white within; petals oblong, slightly shorter than the sepals,
the outer narrowly linear, about
white; corona filaments in 2 series,
1 cm. long, enlarged on one side near apex, short-attenuate at apex,
verrucose along the margin of the enlarged portion and the apex, the
inner filaments few, tuberculiform, less than 1 mm. long; operculum
borne about 6 mm. above base of tube, erect, 2 mm. high, flabellatelobed
and irregularly lacerate-fimbriate; ovary narrowly ovoid,
densely rufo-tomentulous; fruit ovoid, 7 to 8 cm. long, about 4 cm.
in diameter, sharply 6-angled, minutely and scantily puberulent;
seeds oblong-obovate, about 5 mm. long and 3 mm. wide, coarsely
reticulate, the axis slightly curved.
TYPE LOCALITY: Manaos, Brazil.
ILLUSTRATION: Vellosia 3, pt. 1: pi. 9.
DISTRIBUTION: Upper Amazonian Brazil.
BRAZIL: Amazonas: Parintins, Ducke 2404$ (N, Ut).
Until recently collected by Dr. Ducke, in both flower and fruit,
this species was known only from Barbosa's description and excellent