Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

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carretera a Acapulco, 240 m, Hernández & Torres 431 (MO); Dist. Juquila,
Puerto Escondido, 0.1 m N of Rt. 200, MacDougal 349 (DUKE, US); Dist.
Juquila, 5 mi. NW of Puerto Escondido along Rt. 200, MacDougal 350 (DUKE,
US); Dist. Juquila, Puerto Escondido, 150 m SE down coast from town, on rocky
peninsula 15 m above ocean, MacDougal 351 (CHAPA, DUKE, US); between
Mixtepec & Colotepec, 250-800 ft., Nelson 2446 (GH, US); Pochutla, Popenoe
818 (NA); Pochutla, 90 m, Reko 3753 (US); along the Pacific coast, just W of
Puerto Escondido in the Carrazillo Trailer Park, sea-level, Taylor 2663 (DUKE);
27 km SW del Morro Mazatlán, carr. Salina Cruz-Pochutla, Dist. de
Tehuantepec, Torres, Cedillo, Rico & Torres 549 (DUKE).
Notes
Passiflora viridiflora has been placed at various generic (e.g., Murucuia) and
infrageneric levels (e.g., subg. Chloropathanthus) within the family
Passifloraceae. The elongated, tubular flowers of this taxon inspired many
previous workers to group it with other taxa that possess tubular flowers or in a
group of its own because the flowers are not only tubular but also apetalous.
Killip (1938) placed it in the subgenus Chloropathanthus with P. lancifolia, an
apetalous Jamaican endemic. MacDougal (1983) was the first to suggest that P.
viridiflora be placed within Cieca based upon its apetalous flowers and flavonoid
chemistry. In 1992, MacDougal resolved the placement of P. viridiflora by
describing P. juliana, a species clearly referable to Cieca and morphologically
similar to P. viridiflora. Both the molecular and morphological data in this study
also show that P. juliana and P. viridiflora are sister species.