With today' attention on immune deficiency diseases, this is one herb we cannot overlook. Research in Europe indicates that Echinacea does stimulate the immune system. This interferon activity protects cells against viral and bacterial infections. The most common species of purple coneflowers are E. agustifolia, E. purpurea and E. pallida. E. angustifolia is in most demand medicinally though the other two mentioned species are just as effective when properly prepared.
Leaves are lanceolate with smooth margins.
Flower petals do not droop but spread outward from the seed-head. E. purpurea - grows to 5 ft. A robust plant with many ovate leaves. Leaf margins are toothed. Flowers are large with petals drooping towards the stem.