Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

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on the proximal half of the petiole. The lateral lobes are ovate, but longer than
those common in western South America, and commonly diverge at an angle of
greater than 100°. The leaf bases are distinctly cordate. In Brazil, P. suberosa
ssp. litoralis is more common in coastal dunes and tropical dry forests, but it does
occasionally occur in higher elevation moist forests as well. This variant is the
only form of P. suberosa ssp. litoralis found in the Old World. Laminar nectaries
are commonly present in all three of the these variants.
A clone of Passiflora suberosa ssp. litoralis from Guadalajara, México
(MacDougal 478) has been shown to be self-incompatible, as more than 20
attempts by J. M. MacDougal to self pollinate it in the greenhouse failed to yield
fruit. However, a different clone (MacDougal 438) from New Caledonia did prove
to be self-compatible. Two other clones from Chiapas, México (MacDougal 568)
and Río Selegua, Guatemala (MacDougal 583) never set fruit by autogamy while
in cultivation.