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Partridgeberry Fruit

partridgeberry-049a1637Partridgeberry (the fruit is eaten by partridges, or ruffed grouse, as well as wild turkey, mice, foxes, skunks and deer) is a woody vine found creeping along the forest floor, often in large colonies. At this time of year there are bright red berries interspersed among the paired evergreen leaves. If you look closely at a berry, you will see two indentations at its tip. These are the result of the flowers’ unusual structure and the fruit’s development.

In late spring a pair of white flowers appears which share a set of sepals. Each small, fragrant flower has four white hairy petals that join to form a tube. The unusual aspect of these flowers is that they both must be pollinated to obtain a single berry. Each berry is the result of the fusion of the ovaries of the pollinated pair of white flowers. This fusion is what accounts for the two indentations on the surface of each fruit.

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Pitcher Plants Flowering

6-17-16  pitcher plant flower parts labeled 298Pitcher plants are known for their unique, insect-trapping leaves, but their flowers are just as unusual.  Their petals are a deep burgundy color and attract pollinating flies by looking like raw meat. The sepals, usually green structures that protect the bud and then become inconspicuous when the flower opens, are leathery and remain long after the petals fall off, well into winter.  The pistil, or female part of the flower, has a typical ovary at its base, where seeds are formed, but the style (stalk-like in most flowers) expands into a large, star-shaped umbrella. This umbrella becomes the lowest part of the flower as it droops downward in its early open stages and collects pollen that falls off of the anthers surrounding the ovary. The stigmas, where pollen must land in order for pollination to take place, are located on the five points of the star-shaped style, where visiting insects land.  A pitcher plant is designed to be pollinated by pollen stuck to the body of the insect before the insect descends onto the lower platform section of the style, where it crawls around gathering nectar, and inadvertently, pollen. (Photo:  Northern, or Purple Pitcher Plant, Sarracenia purpurea.)

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