The October 2022 tour is up for now, at Tours | UBC Botanical Garden, with a link to Douglas Justice's blog, if you prefer to read it there: October in the Garden 2022 - UBC Botanical Garden. I don't know that I will ever distinguish these trees, though maybe with some effort at paying attention to details would help. There is a tree in my neighbourhood that I did decide one year looks like Sorbus koehneana, based on the pome colour and number of leaflets and long droopy stems. I saw this one last month when it wasn't in the blog I was looking for something else, and I found the label then. Yesterday, I didn't find the label and didn't remember the name, but it's in the blog; once I realized it could be on the south side of Lower Asian Way, I decided it was the one described as planted on a stump. This is the one in the ground in the Meyer Meadow. I posted Sorbus harrowiana last month when it wasn't mentioned, so I get to add some photos this month when it is mentioned, because I like it a lot - it has huge leaflets, and groovy stipules, which captured my attention last month, so I paid more attention to the fruits this time. In contrast is Sorbus setschwanensis, with teeny leaflets. I photographed these last month in the Wharton Glade, and yesterday, since it's mentioned in this month's blog.