# Rattlesnakeweed (*hieracium venosum*) Rattlesnakeweed (Hieracium venosum) is a captivating perennial wildflower native to the dry, open woodlands of eastern North America. A member of the aster family, this plant is most famous not for its flowers, but for its incredibly striking basal foliage. The leaves lie flat against the forest floor in a neat rosette, boasting deep purple-red veins that map across the green surface like a complex web. This unique venation pattern gave rise to the folk belief that the plant could cure snakebites, earning it its common name. During the late spring and summer, Rattlesnakeweed sends up slender, leafless stalks topped with loose clusters of bright yellow, dandelion-like flower heads. These blossoms attract a variety of native bees and other pollinators, making it an important ecological player in sandy, acidic, or nutrient-poor soils where other plants struggle to thrive. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 4 - **Habitat:** Typically found in dry, open deciduous or mixed pine woodlands, sandy clearings, and acidic barrens. ![Rattlesnakeweed](https://inaturalist-open-data.s3.amazonaws.com/photos/3839109/medium.jpg) Photo: Jesse Rorabaugh, CC0 · [iNaturalist](https://www.inaturalist.org/photos/3839109) ## Appearance This plant is easily identified by its basal rosette of oblong, hairy leaves, which are 5 to 15 centimeters long and feature prominent, dark purple-red veins along the midrib and lateral pathways. The upper leaf surfaces are covered in long, scattered hairs. From the center of this rosette rises a smooth, slender, purplish stem, largely devoid of leaves, reaching 20 to 60 centimeters in height. It terminates in a branched, open cluster of small, bright yellow flower heads, each about 1.5 centimeters wide and resembling miniature dandelions. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Magnoliopsida - **Order:** Asterales - **Family:** Asteraceae - **Genus:** Hieracium ## Interesting facts - Its common name, Rattlesnakeweed, comes from an old folk remedy belief that the purple leaf veins resembled snake scales, signaling its potential to cure snakebites. - The species is highly allelopathic, meaning it can release chemical compounds into the soil to inhibit the growth of competing plants nearby. - Unlike many forest plants, it prefers acidic soils and is often found growing alongside blueberries and mountain laurel. ## Special abilities - **Foliar Coloration:** The distinct purple-red veins contain anthocyanins that help protect the plant from light stress and may deter herbivores by making the leaves look less appetizing. - **Drought Adaptation:** Features a deep taproot and fine leaf hairs that reduce moisture loss, allowing the plant to thrive in dry, nutrient-poor, sandy soils. - **Wind-Borne Dispersal:** Produces seeds equipped with a feathery pappus that catches air currents, allowing the species to colonize distant forest clearings. ## Measurements & details - **Length:** 20-60 cm - **Weight:** 0.01-0.05 kg - **Lifespan:** 2-8 years ## Diet & Feeding As an autotrophic plant, it produces its own food using sunlight, carbon dioxide, water, and minerals absorbed through its root system. - **Primary Foods:** Sunlight, Water, Carbon dioxide, Soil nutrients ## Ecological connections - **Mutualism:** American Bumblebee (*Bombus pensylvanicus*) — The bright yellow flowers provide pollen and nectar to native bumblebees during the spring and summer months. - **Eaten by:** [White-tailed Deer](https://www.snappit.app/explore/white-tailed-deer) (*Odocoileus virginianus*) — The basal leaves are occasionally browsed by herbivores, though the long hairs provide some defense. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Rattlesnakeweed? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### How long is Rattlesnakeweed? 20-60 cm ### How much does Rattlesnakeweed weigh? 0.01-0.05 kg ### How long does Rattlesnakeweed live? 2-8 years ### What does Rattlesnakeweed eat? As an autotrophic plant, it produces its own food using sunlight, carbon dioxide, water, and minerals absorbed through its root system. ### Where is Rattlesnakeweed usually found? Typically found in dry, open deciduous or mixed pine woodlands, sandy clearings, and acidic barrens. ## Where to spot - [Buchanan State Forest](https://www.snappit.app/guides/places/buchanan-state-forest) — Pennsylvania, US · Forest - [Five Channels Dam](https://www.snappit.app/guides/places/five-channels-dam) — Michigan, US · Historic Site - [Hartwell Commercial Historic District](https://www.snappit.app/guides/places/hartwell-commercial-historic-district) — Georgia, US · Historic District - [Callaway Gardens](https://www.snappit.app/guides/places/callaway-gardens) — Georgia, US · Botanical Garden - [Cecil B. Day Butterfly Center](https://www.snappit.app/guides/places/cecil-b-day-butterfly-center) — Georgia, US · Botanical Garden - [Reedville Historic District](https://www.snappit.app/guides/places/reedville-historic-district) — Virginia, US · Historic District [View all places to see Rattlesnakeweed](https://www.snappit.app/guides/where-to-see/rattlesnakeweed) ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [Rattlesnakeweed: Facts & Places to See — Snappit](https://www.snappit.app/explore/rattlesnakeweed)