The tree is taught almost everywhere modern posture practice is taught, usually early, usually as the first balance a beginner meets. It is also one of a handful of standing postures with a genuine classical description behind it, and the shape the Gheranda Samhita gives, one foot at the root of the opposite thigh, is close to the shape taught now.
That combination is rare enough to be worth stating precisely. The standing repertoire that fills a contemporary class is largely a twentieth century assembly, documented by Mark Singleton in Yoga Body, drawing on Indian physical culture and European gymnastic systems alongside the hatha inheritance. Most of it has no counterpart in the medieval manuals. The tree does, and so the usual finding is reversed here: a familiar standing posture that the classical texts actually attest.
The atlas records both the continuity and its limits. The Gheranda Samhita gives the leg position and the stillness and nothing else, so where a modern instruction specifies what the arms do or where the eyes rest, that is not classical detail being recovered but later practice being added. Recording where a source stops is as much a part of an accurate entry as recording what it says, and it leaves the boundary visible for anyone tracing how the posture reached the present.