Speyeria hydaspe “Hydaspe Fritillary” Nymphalidae
on Agastache urticifolia “Nettle-leaf Giant Hyssop” Lamiaceae

Great Burn, Lolo National Forest, MT
July 10, 2015
Robert Niese

Fritillaries are a common, large butterfly here in the PNW east of the Cascades. There are several species that are regularly found in our area. Learn more about them here. This particular fritillary is feeding on the nectar of a very interesting and quite common local plant. Its Latin name, Agastache, is Greek for “many spikes” and, as you might guess, its inflorescence looks like a giant spike ball. Like many other members of the mint family, giant hyssop is commonly used in herbal teas and poultices for a variety of medicinal purposes. In particular, the leaves can be used to induce sweating and as a vasodilator. This particular species is quite abundant in the PNW east of the Cascades and is a favorite food source for many ungulates like deer, elk, cows, and moose.

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