Commemorative stamp series - Germany / German Democratic Republic 1983 - 35 Pfennig

From cactus cultures of the GDR With the illustrations of cacti, the Ministry of Posts and Telecommunications of the German Democratic Republic publishes six multicolored special postage stamps. Special cancellations from June 21st to August 20th, 1983 Cacti - attractive colors for insects In the case of cacti, the pollination of the flowers, which is vital for the preservation of the species, is usually done by insects or hummingbirds. From the thickets of the shrubs, the cacti with their mostly white flowers rise up to a height of 18 meters and stretch their pistils towards the pollinators. Often there are climbing nightbluers, which shine high above the leaves of the trees. It is different with the low ball and wart cacti, they attract by flying colors of the flowers or thorns, sometimes also by sweet smell of the gland excrements the flying and creeping pollinators. 35-pfennig value: Oroya peruviana Much further north in the Andes above the Peruvian city of Orya, Prof. Weberbauer discovered at about 4,000 meters altitude a fairly large spherical type of 10 to 14 cm in diameter, the Professor. Karl Schumann, Berlin, in 1903 described as Echinocactus peruvianus. When dividing the large genus Echinocactus in 1923, the American professors N. L. Britton and Rose chose after the find area the name Oroya.