Description ⁶

Plants 8–12(–20) dm. Stems puberulent, glabrescent. Leaves mostly cauline; blades ± lanceolate, 9–15(–25+) cm × 15–45(–60+) mm, l/w = (3.3–)4–6+, abaxially scabrellous, tomentose, or pannose, resin-gland-dotted, adaxially scabrellous, often resin-gland-dotted. Heads in corymbiform to paniculiform arrays. Peduncles 2–35 mm. Involucres ± hemispheric, 6–10 × 7–10 mm. Phyllaries 35–60+ in 4–6+ series, sparsely tomentulose, glabrescent, margins ciliolate, the outer lanceolate to subulate, 1–3 mm, inner oblong, 7–9+ mm, tips subulate to filiform. Florets 30–45(–65). Cypselae 3.5–4+ mm; pappi fuscous to purplish, outer scales 20, 0.2–0.6+ mm, contrasting with 30–40+, 5–7+ mm inner bristles. 2n = 34.

Sources and Credits

1. (c) BlueRidgeKitties, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/blueridgekitties/38869626764/
2. (c) Dendroica cerulea, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/dendroica/9636962857/
3. (c) Steve Guttman NYC, some rights reserved (CC BY-NC-ND), https://www.flickr.com/photos/steveguttman/36471610196/
4. (c) Tom Potterfield, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/tgpotterfield/6789366486/
5. (c) Tom Potterfield, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/tgpotterfield/12931492653/
6. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/5004718

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

Range Map

(c) Discover Life and original sources, some rights reserved (CC-BY-NC-SA)

iNat Map