Adenostyles alliariae

Adenostyles alliariae can reach a height of 40–70 centimetres (16–28 in). The inflorescence consists of dense corymbs hold by hairy peduncles. The small heads are usually composed of 3 to 4 flowers. The receptacle (the part that collects and maintains individual flowers) is naked or hairless. The flowers are of a tubular type and hermaphroditic. The corolla is cylindrical and pink violet. The length of the flower is of 7–8 mm. The period of flowering is from June until August.

Basal leaves are large, kidney-shaped or heart-shaped, leaf margin is toothed. Size of leaves at the base: width 12–14 centimetres (4.7–5.5 in), length 6–9 centimetres (2.4–3.5 in). Cauline leaves are arranged in alternating fashion with successively smaller size and are petiolated. At the base of the petiole are present two large leaflets enveloping the stem.

The area of origin of the species is considered to be mountainous southern Europe. The preferred habitat of this species are wooded areas with tall grasses, rocks, and moraines at 1,300–2,400 metres (4,300–7,900 ft) elevation.

• Sandro Pignatti - Flora d'Italia. Volume 3, Bologna, Edagricole, 1982, pag. 15
• F.Conti, G. Abbate, A.Alessandrini, C.Blasi, An annotated checklist of the Italian Vascular Flora, Roma, Palombi Editore, 2005, pag. 46
• Index Synonymique
• Tropicos
• Biolib
• Royal Botanic Garden Edinburgh

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