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Nature Notes

Nature Notes

Eastern Tiger Swallowtail (Papilio glaucus) A study in protective mimcry

May 2017 Nature Notes contributed by BRNN Membership Director Charlotte Caplan

We’ve all seen this iconic butterfly. Its striking forewing markings – black stripes over a yellow ground – shriek “look at me!”. You can see the males on any spring or summer day cruising along woodland trails and other forest openings looking for the shyer females. Protective mimicry – NOT!

Well not in the adult males & most females, but in all other phases of its life cycle this species shows remarkable variety in its repertoire of defensive mimicry.

 

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Nature Notes

Oconee Bells: The Discoveries of “Perhaps the Most Interesting Plant in North America”

April 2017 Nature Notes contributed by
BRNN member Jenny Squires Wilker

Photo credit Jay Maveety

“Rare and beautiful…The holy grail of plant collectors…Perhaps the most interesting plant in North American,” wrote Asa Gray (1820-1888), the founder of American academic botany, about his life-long obsession, Shortia galacifolia. Also called Oconee Bells, Acony Bells, or Little Coltsfoot, Shortia is a low-growing evergreen perennial, variously described as a dwarf shrub, herb, or ground cover. It is indeed a rare plant, and beautiful all year round, with shiny, scalloped basal leaves that turn from green to reddish-bronze in the winter. One of the loveliest, and most anticipated, spring wildflowers, Shortia’s small, solitary, and waxy flowers are bell-like, nodding on reddish scapes of up to seven inches long. The five fringed petals can be white or pinkish; the flat anthers within are creamy yellow; the long stigma, pink or yellow.

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Save Our Hemlocks

NATURE NOTES: 10 February 2017

By Ken Czarnomski, VP of the Blue Ridge Naturalist Network

At first glance, the magnificent Eastern (Tsuga canadenis) and Carolina hemlocks (Tsuga caroliniana) seem to be losing their ongoing fight to survive the invasive hemlock wooly adelgid (or HWA) Adelges tsugae, which feasts only on them. This aphid, less than 1/32 inch (about the size of a poppy seed), has managed to dramatically increase its rate of infestation in the last decade. Read more

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