It looks like this Part has been superseded by LEGO Part 6135 Plant, Tree Palm Trunk - Short Connector, Axle Hole with 2 Inside Prongs.
Click on a colored part below to see the Sets and MOCs that use part 2536 Plant, Tree Palm Trunk [Undetermined Type] in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.
There are 6 Mold variations of part 2536 - Plant, Tree Palm Trunk [Undetermined Type] in the database, in use between 1989 to 1991. See Molds and other related Parts.