Symphytum asperum

Symphytum asperum or prickly comfrey (Scientific name: Symphytum asperum) is a perennial herb of the genus Symphytum in the family Boraginaceae, native to Western Asia and the Caucasus. It is similar to Symphytum officinale in the same genus. S. asperum is larger than S. officinale.

Common name: Symphytum asperum, Scientific name: Symphytum asperum, aka： prickly comfrey, Place of origin: Western Asia, Caucasus, Height: 60-150 cm; Leaf shape: rhizomatous; Leaf blade: 30-40 cm; Leaf shape: oblong-ovate; Leaf margin: margined, Petiole: with long petiole, Leaf Inflorescence: alternate; stalk: without winged, Inflorescence: scorpion-shaped, Corolla: bell-shaped, slightly recurved with 5 shallow lobes at the apex; corolla length: 2 cm; flower diameter: 1.5 cm, stamens: 5 short stamens with an elongated triangular appendage; pistils: protruding from the corolla, Flower color: white, peach, red and purple; sepals: 5 lobes, Flowering season: June to August; uses: garden and flower beds.