Phyllodes, cladophylls, cladode? Am trying to ID a tree, and need to know the name of the structures on the stem between the leaves (attached pic). Thanks in advance for any assistance. The _Sinoj_ is just the abbreviation for the bed name at RBG.
I'm pretty sure this tree is Zanthoxylum esquirolii. I've not seen these structures mentioned in any description, however, or seen them in any other pic. The leaf is compound. Have attached pic of the trunk. The red leaves in this pic belong to a shrub next to this tree.
Dredging things up from my botanical past, I agree with Michael F. "It's a compound leaf with a winged rachis." One could say ..an ALATE rachis. I am not sure that these "wings" are separately defined or named "structures" They appear as if they could merely be outgrowths originating from the cambium of the rachis. Aren't there some Vetches with leaves that have similar "winged" rachi?