Postage stamps of the USSR

USSR. December 22, 1975. A series of postage stamps "Flora of the USSR" with a denomination of 4 kopecks depicting the Arctic poppy, a denomination of 6 kopecks depicting the European globeflower, a denomination of 10 kopecks depicting the buttercup anemone (from left to right in the upper row), a denomination of 12 kopecks depicting the wood anemone and a denomination of 16 kopecks depicting the Lehmann eminium (from left to right in the lower row), issued by the USSR Ministry of Communications. New series of stamps. Valentin Khukhlaev/TASS