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Genus Symphytum - Comfrey
L., Sp. PI., ed. 1 (1753) 136; Gen. PI. ed. 5 (1754) 66.
Description:
Calyx 5-shaped, corolla tubular or bell-shaped, with 5 short portions, which have lance- thorn-shaped on the edge integuments. The portions are alternatively attached to the tube respectively of the stamens and they are collected in cone. The walnuts are sloping arranged and each of them is concave.
This plants are perennial and uneven rugged. They have big leafs. Flowers are small numbered, usually blue or yellow colored.
„Флора на България”, част II, Н. Стоянов, Б. Стефанов, Б. Китанов, Наука и Изкуство, София, (1967)
(“Flora of Bulgaria”, part II, N. Stojanov & Co, Science and Art Publishing House, (1967))
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