Raspberry

Berry of Rubus arcticus. by Ztaffanb, 2007. https://commons.wikimedia.org/wiki/File:Rubus_arcticus_berry.jpg. Licenced with Public Domain.

Rubus arcticus grows most often in acidic soils rich in organic matter. It is a thornless perennial up to 30 cm (1 foot) tall, woody at the base but very thin farther above the ground. flowers are in groups of 1-3, the petals pink, red, or magenta. Fruit is deep red or dark purple, with an unusual hardiness to frost and cold weather conditions

(https://en.wikipedia.org/wiki/Rubus_arcticus)