HYPP-A Unité de Malherbologie & Agronomie
Weed Science & Agronomy

Bayer Code : chymy

Scientific name: Coleostephus myconis (L.) Reichenbach

Synonym(s) of Sc. name: Myconia myconis (L.) Briq., Myconia chrysanthemum Schultz Pyrethrum myconis Moench, Leucanthenum myconis (L.) Ginaud

Classification: Compositae, Dicotyledonous

Common name: Coleostephus myconis

Synonym(s) of Common name:

Name per country: DE : Behaartes Maßliebchen ; ES : giralda ; FR : chrysanthème de Myconos ; IT : margherita gialla ; PT : pampilho-de-micao ;

Biological type: Annual

Seed snapshot Seed:


Seedling snapshot Seedling:

- Cotyledons elliptic or ovate, with a rounded tip, sessile

- Leaves entire, lanceolate, more or less dentate.

Adult plant snapshot Adult plant:

- Height: 10-45 cm.

- Stem erect, glabrous, often branched, with an extensive principal root.

- Leaves: the lower obovate, spatulate, petiolate, median leaves obtuse, dentate, sessile,half-amplexicaule.

- Flowers yellow in heads of 2 kinds: disk-florets with a flat tube ended with 4 or 5 teeth and the ray -florets ligulate. Involucral bracts nearly completely membranous.

- Fruits : 2 kinds of achenes. Outer achenes oblong, short, inner achenes oblong acuminate. Seeds sometimes with a little cylindrical membranous crown. Seeds of disk-florets with 6-10 ribs, cylindrical, 2 mm in diameter.

- Plant used as insecticide, antiseptic, to relieve stomach disorders, a vermifuge and a stimulant. Rare in crops.

- Biological type: annual.

Ecological profile (click on flags): Spain   Present     France  Rare     Italy  Rare     Portugal  Present    

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