I would like to know why the #31 post was combined with the earlier Rhus posts. The leaves are entirely different, not only in form, but also in terms of hairs. The earlier post's Rhus I'm quite familiar with, as also #31. Granted #31 is a juvenile, but there are a number of morphological differences, not the least of which is, that #31 does not produce a milky sap when a leaf/stem is broken off.
(I really need an certain ID for #31...) Also, I can touch #31 with impunity, but I do not dare touch any part of the earlier posts' Rhus species. (ITCHY!)