Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

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which he called P. regalis, now known as P. macfadyenii. However, Macfadyen
unexpectedly passed away before the publication of his flora, though a large
portion of it was distributed. As a result, several authors viewed the new species
that were described by Macfadyen as ineffectively published and began to
publish new species based upon his work. Grisebach (1860) was one of these
authors and published a description of P. regalis, which he attributed to
Macfadyen. However, the species that he described was P. lancifolia and not
Macfadyen's P. regalis. In addition, Ramírez Goyena (1909) published a
description of P. regalis, which he attributed to Macfadyen, but the species that
he described was also P. lancifolia and a later homonym of P. regalis Macf. ex.
Griseb. Incidentally, Ramírez Goyena's description of P. regalis, other than
being in Spanish and not in English, is virtually identical to that of Grisebach.
Killip (1938) placed P. lancifolia together with P. viridiflora in the subgenus
Chloropathanthus. However, the discovery of P. juliana, a species that very
closely resembles P. viridiflora but is clearly a member of supersection Cieca,
reinforced MacDougal's hypothesis (1983) that the apetalous, tubular-flowered
species belong in supersection Cieca (MacDougal, 1983, 1992).
Passiflora lancifolia is very similar to another Jamaican endemic, P.
macfadyenii. They both possess bright red, elongated tubular flowers that are
likely pollinated by hummingbirds. However, these two species can be easily
separated utilizing both vegetative and reproductive characters. Passiflora
lancifolia possesses shallowly trilobed leaves (rarely unlobed) with the lateral
lobes commonly significantly less than half the length of the central lobe, and the