Strolling in the streets of San Francisco between October and December may occasionally be unbearable for your nose if you happen to come across a female ginkgo tree. It is not accidentally named “stinko gingko” – its female trees yield yellow plum-like fruits that eventually drop on the ground and actually stink. However, some people who crave for unusual feelings may even like such an experience. In fact, female trees are not numerous in San Francisco, since city’s authorities encourage to plant only male ginkgos. This tree has survived for millions of years and is called a "living fossil". Paradoxically, nowadays, these ancient trees grow in the most modern surroundings. It is appreciated thanks to its fan-shaped leaves which are presupposed to improve memory skills and thin blood. The foliage resembles that of a maidenhair fern. Hence comes its another name – “maidenhair tree”.