This attractive 1964 definitive issue from the Soviet Union highlights edible forest mushrooms commonly found across Eastern Europe and Russia. The set includes beautifully illustrated species such as Podosinovik (Red-cap bolete), Maslyonok (Butter mushroom), Lisichki (Chanterelles), Ryzhik (Saffron milk cap), and Belyi Grib (Porcini). Printed in naturalistic colors with woodland background motifs, the stamps combine scientific interest with everyday cultural relevance, as mushroom gathering was an important seasonal activity in the USSR. The issue is widely appreciated among thematic collectors focusing on flora, fungi, or food-related philately. Complete multi-value groupings like this are particularly appealing for exhibition displays.