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a genus of plants of the Papaveraceae (poppy) family. They are annual, biennial, or, more rarely, perennial herbs with a milky juice in the roots. The corollas are yellow, yellow with a black spot, or red with a black spot. The fruit is a silicular capsule that opens in two flaps. There are about 25 species, which are distributed from the Mediterranean region to Afghanistan. In the USSR there are ten species, predominantly in Middle Asia and the Caucasus. G. corniculatum is a weed found in the southern part of the European USSR, the Caucasus, and sometimes in Middle Asia. The horned poppy (G. flavum) is found along the coast of the Crimea, on the Taman Peninsula, and in the western Transcaucasus. Both species are ornamental. Plants of this genus are poisonous, since they contain alkaloids that are similar to opium in their effect.