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Agronomy | Free Full-Text | Preliminary Observations on Viola calcarata as a Source of Bioactive Compounds: Antioxidant Activity and Phytochemical Profile of Two Alpine Subspecies
![Heartsease, Europe, Plants, Violet family, Violaceae, Flowers, Blossom, Flowers, Spring, Springtime, Landscape, Horizontal, Lower Saxony, Germany Stock Photo - Alamy Heartsease, Europe, Plants, Violet family, Violaceae, Flowers, Blossom, Flowers, Spring, Springtime, Landscape, Horizontal, Lower Saxony, Germany Stock Photo - Alamy](https://c8.alamy.com/comp/2R63K4E/heartsease-europe-plants-violet-family-violaceae-flowers-blossom-flowers-spring-springtime-landscape-horizontal-lower-saxony-germany-2R63K4E.jpg)
Heartsease, Europe, Plants, Violet family, Violaceae, Flowers, Blossom, Flowers, Spring, Springtime, Landscape, Horizontal, Lower Saxony, Germany Stock Photo - Alamy
![SWITZERLAND - CIRCA 1958: A Stamp Printed In The Switzerland Shows Pansy, Viola Tricolor, Garden Flower, Circa 1958 Stock Photo, Picture and Royalty Free Image. Image 13257298. SWITZERLAND - CIRCA 1958: A Stamp Printed In The Switzerland Shows Pansy, Viola Tricolor, Garden Flower, Circa 1958 Stock Photo, Picture and Royalty Free Image. Image 13257298.](https://us.123rf.com/450wm/boris15/boris151204/boris15120400170/13257298-switzerland-circa-1958-a-stamp-printed-in-the-switzerland-shows-pansy-viola-tricolor-garden-flower.jpg?ver=6)
SWITZERLAND - CIRCA 1958: A Stamp Printed In The Switzerland Shows Pansy, Viola Tricolor, Garden Flower, Circa 1958 Stock Photo, Picture and Royalty Free Image. Image 13257298.
![Two purple and yellow flowers of Wild pansy or Viola tricolor lying with their stalks on scuffed leather Stock Photo - Alamy Two purple and yellow flowers of Wild pansy or Viola tricolor lying with their stalks on scuffed leather Stock Photo - Alamy](https://c8.alamy.com/comp/2DRT7N4/two-purple-and-yellow-flowers-of-wild-pansy-or-viola-tricolor-lying-with-their-stalks-on-scuffed-leather-2DRT7N4.jpg)
Two purple and yellow flowers of Wild pansy or Viola tricolor lying with their stalks on scuffed leather Stock Photo - Alamy
![Viola Tricolor, Also Known As Johnny Jump Up, Heartsease, Heart's Ease, Heart's Delight, Tickle-my-fancy, Is A Common European Wild Flower, Growing As An Annual Or Short-lived Perennial. Stock Photo, Picture and Royalty Viola Tricolor, Also Known As Johnny Jump Up, Heartsease, Heart's Ease, Heart's Delight, Tickle-my-fancy, Is A Common European Wild Flower, Growing As An Annual Or Short-lived Perennial. Stock Photo, Picture and Royalty](https://previews.123rf.com/images/anoli50/anoli501904/anoli50190400006/133229448-viola-tricolor-also-known-as-johnny-jump-up-heartsease-heart-s-ease-heart-s-delight-tickle-my-fancy.jpg)