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Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

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343<br />

vegetatively with their distinctly trilobed leaves. However, the stipules <strong>of</strong> P.<br />

eglandulosa are much wider and foliose, the leaf bases are cordate, and the leaf<br />

apices are acuminate. In addition, P. eglandulosa does not possess<br />

inflorescences and its flowers are more delicate with narrower sepals and thinner<br />

outer coronal filaments. <strong>Passiflora</strong> obtusifolia is also similar to P. suberosa ssp.<br />

litoralis. However, P. suberosa ssp. litoralis is never peltate at the reproductive<br />

nodes, whereas P. obtusifolia is commonly peltate. <strong>Passiflora</strong> suberosa ssp.<br />

litoralis does not produce flowers in long inflorescences. The fruits <strong>of</strong> P.<br />

obtusifolia are over 20 mm long and 18 mm wide, but the fruits <strong>of</strong> P. suberosa<br />

ssp. litoralis rarely exceed a length <strong>of</strong> 12 mm and a width <strong>of</strong> 10 mm.<br />

MacDougal found that one clone <strong>of</strong> aff. <strong>Passiflora</strong> obtusifolia (MacDougal<br />

1486) was self-incompatible in the greenhouse. Two clones <strong>of</strong> <strong>Passiflora</strong><br />

obtusifolia (MacDougal 495GR and MacDougal 4687) did not set fruit over<br />

several years <strong>of</strong> cultivation at the University <strong>of</strong> Florida or at Missouri Botanical<br />

Garden. However, T. Skimina was able to successfully cross P. obtusifolia with<br />

P. itzensis.<br />

McCormick (1982) chromatographically screened leaf samples <strong>of</strong> P. obtusifolia<br />

for flavonoids and did not find detectable levels <strong>of</strong> flavonol 3-O-glycosides or C-<br />

glycosylflavones.

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