downloads/Killip 2.pdf - Passion Flowers

AMERICAN PASSIFLORACEAE 429
peduncles 4 to 8 cm. long, stout; bracts oblong, 1.5 to 2.5 cm. long,
1 to 1.3 cm. wide, acutish and mucronulate at apex, cordate, conspicuously
1-nerved, thin-chartaceous, glaucous, persistent; flowers
about 5 cm. wide; calyx tube broadly campanulate; sepals oblong,
obtuse, cucullate, dorsally foliaceous-awned ; petals oblong, subequal
to sepals, purplish; corona 4-ranked, the outer 2 rows of filaments
narrowly ligulate, slightly shorter than the petals, the inner filaments
capillary, 2.5-3 mm. long, minutely capitate, erect; operculum
tubular, membranous at base, filamentose above, bearing minute,
dentiform processes within; nectar rings 2, rather remote from each
other; limen tubular, laxly surrounding base of gynophore, crenulate
at margin; ovary ovoid, tomentose.
TYPE LOCALITY: Porto Imperial, Goyaz, Brazil.
Brazil.
DISTRIBUTION: Known only from the type locality, in central
BRAZIL: Goyaz: Porto Imperial, Burchell 8537 (K, type, N, P, Y).
This and the following species of the series Lobatae constitute
one of the most complex groups in the entire genus. In the general
outline of the leaves, stipules, and bracts the species bear a ^lose
resemblance to one another. The leaves are 3-lobed nearly to or to
slightly beyond the middle, the lobes being subequal and usually
glandular-serrulate in the sinuses; petiolar glands are usually present,
varying in number from two to nine; the stipules are semi-ovate,
semi-oblong, or semi-lanceolate, attached laterally at a point from
near their base to near their middle (in the latter case, the stipules
appear nearly reniform); the bracts are large, usually thin-membranous
and glaucous, and all three are borne at the point of articulation
of the peduncle; the flowers are showy, and have a complex
coronal structure.
Masters keyed out these species into certain main groups, but
the characters which he used, i.e., the relative length of the peduncles
to the petioles, and of the outer corona filaments to the petals,
are unsatisfactory; indeed, these proportions vary even within a
single species. Better distinguishing characters for the grouping
of the species appear to be (1) whether the sepals terminate in a
broad, leaflike awn or in a minute mucro; (2) whether the bracts
are borne close to or remote from the base of the flower; (3) whether
the operculum is filamentose or merely fimbrillate or denticulate;
(4) whether the petiolar glands are stipitate or sessile.
Many of the species were described originally from living plants
introduced into British conservatories, and the points of difference