Coreopsis lanceolata L.
Coreopsis crassifolia Aiton
Coreopsis heterogyna Fernald
Coreopsis lanceolata L. var. villosa Michx.
Lanceleaf tickseed, lance-leaved tickseed
Lance-leaved coreopsis is a North American native, and a member of the sunflower family. It has since become naturalized through much of North, Central and South America; as well as South Africa and eastern Asia. In parts of Asia, especially Japan, it is considered an invasive species. It appears on sandy shores and banks, grasslands, roadsides, and oak-pine savanna. They are popular garden plants, and many cultivars exist.
Plants: Plants are 8-32" (20-81 cm) tall, hairless or hairy, erect or prostrate.
Leaves: Leaves are 2-8" (5-20 cm) long, usually opposite but sometimes alternate near the top. Most leaves are near the base. Some leaves are deeply cut, almost forming three leaves. They are sessile, and lance- or spoon-shaped, or narrowly oval.
Flowers: These composite flowers consist of 6-10 yellow ray flowers, the “petals;” and yellow disc flowers, numerous tiny florets that make up the center. Each ray flower has four fused lobes, leaving three teeth at the end. Flowers are 1-1½" (2.5-3.8 cm) around, sometimes larger. Flowers appear from May to July.
Fruits: The disc flowers become brown flattened seeds (achenes) ¹/₃₂" (1.2 mm) long, with two small awns.
Coreopsis lanceolata on Missouriplants.com
Coreopsis lanceolata on Wildflowers of the United States
Coreopsis lanceolata on Discover Life
Coreopsis lanceolata at the University of Florida Institute of Food and Agricultural Sciences
Coreopsis lanceolata at the Missouri Botanical Garden
Coreopsis lanceolata on Wikimedia Commons
Coreopsis lanceolata description by Thomas H. Kent, last updated 25 May 2020.
Range: Zones 4-9: