Summary ⁴

Coreopsis major is a plant species of the genus coreopsis in Asteraceae. Coreopsis species are commonly called tick seeds.

Description ⁵

Perennials, 30–90 cm. Internodes (± mid stem) 5–11 cm. Leaves: petioles 0–1 mm; blades simple or 3-foliolate, simple blades or leaflets ± lance-elliptic to narrowly lanceolate, 25–55(–100+) × (4–)6–15(–30+) mm (seldom lobed). Peduncles 2–6+ cm. Calyculi of 7–8 oblong to linear bractlets 3–6 mm. Phyllaries 8, lance-oblong to lance-ovate, 6–8 mm. Ray laminae 12–30+ mm. Disc florets 40–80+; corollas yellow (often drying blackish to purplish), 6–7 mm. Cypselae obovate to oblong, 4–5 mm. 2n = 26, 78, 104.

Sources and Credits

1. (c) BlueRidgeKitties, some rights reserved (CC BY-NC-SA), http://www.flickr.com/photos/41380738@N05/5912210777
2. (c) J. Michael Raby, some rights reserved (CC BY-NC-ND), https://www.flickr.com/photos/jmr-holdit/7218217990/
3. (c) Kid Cowboy, some rights reserved (CC BY-SA), https://www.flickr.com/photos/70278809@N00/3633921336/
4. Adapted by Jonathan (JC) Carpenter from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Coreopsis_major
5. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/4955452

More Info

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

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