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Rattlesnake Weed, Rattlesnake Hawkweed, Veiny Hawkweed - Hieracium venosum


Family: Asteraceae - Aster family Genus Common Name: Hawkweed Native Status: NativeDicot Perennial Herb
Hieracium venosum - Rattlesnake Weed, Rattlesnake Hawkweed, Veiny Hawkweed. is listed as Endangered in Maine. Officially listed as a noxious weed in Washington state, even though the USDA doesn't list it as being found in Washington State. The fact that it is listed as a noxious weed in that state implies that it is indeed found there, and it is listed for neighboring British Columbia, so I'm including it in Washington's list here on USWildflowers.com. I suspect that with this being a disjunct location - Hieracium venosum is an eastern species - that the British Columbia and Washington populations are not native.

In traditional herbal medicine, a decoction of the plant was reputed to relieve the effects of the bite of venomous snakes, according to The National Dispensatory by Alfred Stille and John Michael Maisch, second edition published in 1879.

Found in:
AL, CT, DC, DE, FL, GA, IN, KY, MA, MD, ME, MI, MO, MS, NC, NH, NJ, NY, OH, PA, RI, SC, TN, VA, VT, WV

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Hieracium venosum

Distribution of Hieracium venosum in the United States and Canada:
Map unavailable.
Map courtesy of The Biota of North America Program.
Map color key

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Site: White County, GA Date: 2011-May-02Photographer: Gerald C. Williamson
Nikon D7000
The yellow blossoms consist entirely of ray florets, and are around 3/4 inch across. They are at the end of several long, rambling, wiry stems.
Hieracium venosum

Site: White County, Ga Date: 2009-May-29Photographer: Gerald C Williamson
The plant grows up to about 30 inches high. It may have up to around 20 blossoms.
Click on the photo for a larger image
Hieracium venosum

Site: Towns County, Ga Date: 2010-April-30Photographer: Gerald C Williamson
The rosette of basal leaves are distinctly red-veined. They may have a hairy fringe but are generally smooth. There may be a few hairs on the stem near the basal leaves, but the stem is otherwise smooth.
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Hieracium venosum

Site: Lake Nottely, GA Date: 2009-May-29Photographer: Gerald C Williamson
The stems are generally leafless, perhaps with a few bract-like leaves at the branches.
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Hieracium venosum

References used for identification and information:
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Hieracium venosum initially published on USWildflowers.com 2011-11-09; Updated 2017-03-02

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2024
Photographs Copyright owned by the named photographer



Code Update 20230302