Continue south on Shrader Street.
At 1044 Shrader you’ll find a ginkgo tree, native to China. The scientific name is Ginkgo biloba. Of the more than 1,000 ginkgo trees in San Francisco, I would bet fewer than 25 are female trees. This tree is a female, and it’s the only female ginkgo in the neighborhood. Female ginkgos have foul-smelling fruit - it smells like vomit, caused by the release of butyric acid, which also gives rancid butter its horrible smell. There are so few places in San Francisco where you can find the female of this species that I devoted a separate page to their locations in my Trees of San Francisco book. If you’re visiting from November to February, you should be able to find the fruits on the sidewalk beneath this tree. The other ginkgos nearby (at 1050 Shrader, for example) are all male trees.
Continue up Shrader to Parnassus Avenue, and turn left, heading downhill on Parnassus until you reach Cole Street, kitty-corner from where our tour started.