Glebionis segetum(L.) Fourr.

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Glebionis segetum (syn. Chrysanthemum segetum) is a species of flowering plant in the family Asteraceae, probably native only to the eastern Mediterranean region but now naturalized in western and northern Europe as well as China and parts of North America.] Common names include corn marigold and corn daisy.

Glebionis segetum has been hybridized with related Argyranthemum species to create cultivars of garden marguerites.

Glebionis segetum is a herbaceous perennial plant growing to 80 cm tall, with spirally arranged, deeply lobed leaves 5–20 cm long. The flowers are bright yellow, produced in capitula (flowerheads) 3.5-5.5 cm in diameter, with a ring of ray florets and a centre of disc florets.Glebionis segetum is widely naturalised outside of its native range, colonising western and central Europe with early human agriculture; it can be an invasive weed in some areas. However, it also was ranked very highly, in terms of nectar production, thus showing particular value in the role of nectar-provider for insects in a UK survey of meadow species' production of nectar sugar and pollen. Glebionis segetum was practically an exact equivalent in terms of how much nectar and pollen it produced in this study with the popular garden and meadow plant, cornflower Centaurea cyanus — the top producer of nectar sugar among the cultivated plants in the study (as opposed to those classified as weeds). Its long blooming period helps its ranking, as it does not have few flowers with very high nectar volume per flower — coupled with a brief blooming period that completely exhausts the plant, like some top-ranked plants in nectar sugar production surveys (e.g. Bull Thistle, Cirsium vulgare). The plant strongly attracts very small butterflies (such as the Pearl Crescent) and also small hoverflies such as Toxomerus marginatus. Japanese beetles will consume the petals.

The corn marigold appears to have been a serious weed during the 13th century in Scotland, as suggested by a law of Alexander II which states that if a farmer allows so much as a single plant to produce seed in amongst his crops, then he will be fined a sheep.

In Crete and Greece, the leaves and the tender shoots of a variety called neromantilida (νερομαντηλίδα) are eaten raw in salads or browned in hot olive oil by the locals.

Glebionis segetum - Wikipedia

 

Facts

An annual introduced from the Mediterranean region, corn daisy is sometimes grown as a garden plant, and is occasionally a weed of crops such as corn.

Habitat

Anthropogenic (man-made or disturbed habitats), meadows and fields

Characteristics

HabitatterrestrialNew England state

• Connecticut
• Maine
• Massachusetts

Leaf typeleaves are simple (i.e., lobed or unlobed but not separated into leaflets)Leaf arrangementalternate: there is one leaf per node along the stemLeaf blade edges

• the edge of the leaf blade has lobes, or it has both teeth and lobes
• the edge of the leaf blade has teeth

Flower type in flower headsthe flower head has tubular disk flowers in the center and ray flowers, these often strap-shaped, around the peripheryRay flower color

• orange
• yellow

Tuft or plume on fruitthere is no plume, or the plume is made up of scales, awns, a crown, or a rimSpines on plantthe plant has no spinesLeaf blade lengthUp to 60 mmFlower head widthUp to 50 mmDisk flower numbermore than 50

 

Glebionis segetum (corn daisy): Go Botany (nativeplanttrust.org)