L., Sp. Pl. 957. 1753
P. misera H.B.K.
Slender vine, essentially glabrous; stems striate. Stipules usually persistent, narrowly subulate, ca 2 mm long; leaf blades of 2, ± oblong lobes directed at nearly 180° angle to each other (rarely with a small central lobe), truncate or subcordate at base, 1-2.5 cm long, 5-13 cm broad, the lobes rounded and mucronulate, the lower surface glaucescent with 3-5 pairs of round glands usually along midribs especially in axils of lateral veins; palmate veins 3. Flowers generally solitary in leaf axils; peduncles 3-9 cm long, obscurely jointed immediately below to 1 cm below the flowers, the bracts inconspicuous, setaceous, ca 1 mm long; calyx tube campanulate, ca 4 mm deep, the lobes 5, lanceolate, ca 1.5 cm long, light yellowish-green; petals 5, oblong, ca 1 cm long, greenish-white; filaments of corona in 2 series, the outer to 10 mm long, mostly pale purple, the inner ca 5 mm long, purplish, narrower; operculum plicate, ca 3 mm high, incurved, purplish; gynophore slender, to 8 mm long, purple; ovary narrowly ellipsoid, to 4 mm long, purple, capitellate. Berries globose, ca 1.5 cm diam, deep blue; seeds ovate, ca 3 mm long, transversely ridged, the ridges rugulose. Croat 8273, 8278.
Uncommon, along the shore. Flowers and fruits throughout the year.
The distinction is obscure between this species and P. misera H.B.K., which is therefore not recognized here. The petals, sepals, and outer series of corona filaments reflexed somewhat at anthesis. Anthesis occurs in the early morning, and plants collected at 10:30 A.M. usually have all flowers closed. Nectar is probably enclosed within the operculum, within which many holes are seen. Panama to Argentina. In Panama, known only from tropical moist forest around Gatun Lake.