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Trailing Arbutus
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Trailing Arbutus

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Rare Flower Found on Preserve Site

The Trailing Arbutus (Epigaea repens) has played a central role in the history of Indiana University. It is the University’s official flower and gave the Arbutus yearbook its name. One hundred years ago, a popular destination for students traveling by horse and buggy was Arbutus Hill, just east of town. It was said that the plant occurred nowhere else in the state in such abundance and that the spring air was perfumed by its delicate odor. Herman B Wells and the Indiana University Board of Trustees later requested that bouquets of trailing arbutus be brought to their meetings so they could see Indiana University’s official flower.

Today, few students or faculty members would recognize the trailing arbutus. Arbutus Hill burned in 1906 and is now covered with forest. Sadly, only a few trailing arbutus plants remain. An uncommon species, the trailing arbutus has become even rarer in southern Indiana as human activities have altered its habitat. The plant is best observed on steep south or west-facing slopes where soils are thin and leaf litter does not bury the plant. Unfortunately, it is absent from most habitats where it could occur.

Once the trailing arbutus is gone from an area, it is likely gone forever. This small, prostrate plant rarely produces fruits, and it's seeds are dispersed by ants. It requires a certain type of fungus to grow with its root system or it will not establish and is virtually impossible to transplant. The species is thought to be a relict from the time of the glaciers, similar to other plant oddities near Bloomington like the eastern Hemlock or Yellowwood. The best approach to preserving Indiana University’s official flower is to protect and manage its few remaining habitats.

Fortunately, the Moore's Creek site of the Indiana University Research and Teaching Preserve supports a remnant population of trailing arbutus. This is the only place on the Indiana University (extended) campus where its official flower can be found. Mid-April is an ideal time to observe this interesting and rare plant in flower.