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Vit.En.

Vit.En

Knautia arvensis

Knautia arvensis

Fam. Dipsacaceae

Specie: K. arvensis

Forma biologica: emicriptofita scaposa (Hr)

Ciclo di vita: poliennale-perenne

Altezza: 20-50 cm

Apparato radicale: radici secondarie da rizoma

Fusto: ipogeo rizoma; epigeo eretto con una o due paia di foglie

Foglie: le basali sono picciolate, intere o lobate; quelle cauline sono sessili, pennatosette divise in 4-12 segmenti

Fiore: riunito in capolini emisferico, lungamente peduncolato, circondato da brattee ovali. La corolla rosa-violacea è imbutiforme

Frutto: achenio

Antesi: maggio-agosto

Habitat: prati poco fertili, margine delle strade incoliti, pascoli

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