Our low temp for Nov. was 50°F and I'm thinking maybe I should look for some long pants soon.
For those curious to see more Euphorbia photos, as well as read about the plants, I recommend this 2019 book, which was published in South Africa but should be available worldwide, if you look for it.
It's a field guide for the purposes of identification, restricted to one of the world's hotspots, and excluding plants from Madagascar. That said, there's an insane amount of detail aimed at telling one plant from another. Are the spine shields continuous? Do the glands have processes? Are the peduncles persistent? These are the kinds of questions you need to answer in order to get the answer you seek. The plants are arranged in 20 groups based on habit (and certain other features), so you can find the general type of plant you're looking for and then home in on which specific species it may be. Usually the two plants which look most alike are featured on opposite pages so you can compare one to the other most directly.
The plants pictured are mostly not perfect specimens from cultivation, but scrappy and weather-beaten plants from habitat. Which I like as a refreshing reality check. I thought the pictures were incredibly helpful for the purposes of ID, if not general Euphorbical enjoyment.
