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Holly Shelter butterfly/host plant walk with Jeff Pippen

Sponsored by the Southeast Coast chapter

Sunday, April 15, 2012

Jeff Pippen of Duke University lead an outing to Holly Shelter Game Land, focusing on butterflies and their host plants.  Species seen included the Palamedes Swallowtail, Pearl Crescents, Frosted Elfin, Northern and Southern Cloudywings, Clouded and Dusted Skippers, and Reversed Roadside-Skippers.


Finding Sundews

First stop - a powerline easement where Jeff points out a sundew. (Photo by Esther Murphy)


Dwarf Sundew, Drosera brevifolia

Common in our area, Dwarf Sundew is hard to find because of its tiny size. Sundews are insectivorous plants, catching insects on the sticky "dew" drops they secrete. This one is just opening a flower. Identified by its small size, spatulate leaves and flowering stem with glandular hairs (stipitate-glandular inflorescence).


Small Butterwort, Pinguicula pumila

Also under the powerline were Small Butterworts, rare in our area and in bloom! Good id marks are its small size and light-colored flowers.


Bladderwort, Utricularia sp


Pointing out rare plants

Jeff points out Calopogon barbatus and Pinguicula caerulea among the Pitcherplants.


Blue Butterwort, Pinguicula caerulea

Uncommon on the coast, Blue Butterwort is larger than Small Butterwort and has larger, bluer flowers, although the flowers many rarely be white. The tuft of hair protruding from the Blue Butterwort's flower is also a way to separate the two species.


Blue Butterwort flower close up

Here you can see the tuft of hairs (the "palate") protruding from the flower. In Dwarf Butterwort, the yellow, hairy palate is recessed within the flower tube.


Bearded Grass-pink, Calopogon barbatus

It's a treat to see this rare species in bloom!


Southern Purple Pitcherplant, Sarracenia purpurea var. venosa

This common species has short, wide trumpets.


Southern Purple Pitcherplant flower


Yellow Pitcherplant trumpets, Sarracenia flava


Yellow Pitcherplant flower


A closer look at the butterworts.


Swollen Bladderwort, Utricularia inflata, on a pond


Bladderwort in bloom


Common Yellow Thistle, Cirsium horridulum

Common Yellow Thistle is a host plant for the small orange butterfly, the Little Metalmark.


Dwarf Azaleas, Rhododendron atlanticum

Dwarf Azaleas spread by rhizomes, underground stems, so that large patches form in the right conditions. Host to Azalea Sphinx Moths.


Dwarf Azalea flowers


Dwarf Azalea can also have pink flowers.


Staggerbush, Lyonia mariana

Staggerbush has long, cylindrical flowers in bundles on leafless branches of the previous year. It's a host plants for two species of Datana moths whose showy caterpillars have black-and-yellow stripes and bright red heads.


Switch Cane

Switch Cane is the host plant for the rare Reversed Roadside-Skipper which Jeff pointed out on the side of the road.


Swamp Bay, Persea palustris

Swamp Bay is the host plant for the beautiful Palamedes Swallowtail which we saw frequently. Swamp and Red Bay are being decimated by a fungus carried by an introduced Asian beetle. The harmless galls shown on the leaves, along with the bay smell of crushed leaves, are good id marks.


Dwarf Wax-myrtle, Morella pumila

Wax-myrtles are host plants for the Little Wife Underwing, a brown moth that shows bright orange bands when it spreads its wings in flight.


Myrtle Holly, Ilex myrtifolia


Our thanks to Jeff, extraordinary naturalist and teacher, who drew people from up and down the coast and as far west as the triangle to find rare butterflies among the rich native plants of Holly Shelter.  It was a strong reminder that our butterflies depend on healthy and viable native plant habitat.

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