Flowers of the woody vine Pachyptera hymenaea change from dark lavender to light lavender or white in three days while retained on plants. By the time flowers are three days old, they do not contain pollen or nectar, but may attract pollinators to the plants. Thrips and weevils preyed upon reproductive parts of P. hymenaea. Ants and bees foraged upon its nectar, and bees collected its pollen.
Barrows, Edward M., "Floral Maturation and Insect Visitors of Pachyptera hymenaea (Bignoniaceae)" (1977). Ba. Paper 71.
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