мах бутлуурын хийц шинж чанар
A Modern Herbal ComfreyBotanical. A variety with flowers of a rich blue colour S Asperimum Prickly Comfrey was introduced into this country from the Caucasus in 1811 as a fodder plant This species is the largest of the genus rising to 5 feet and more with prickly stems and bold foliage the leaves very large and oval the hairs on them having bulbous bases