The hyssop was supposedly used to pass the sour wine to the mouth of Jesus, but there are numerous plants in various versions of the Arma Christi, and sometimes each one sits in its own little space not quite related to the others, so I don't know which ones specifically are hyssop (and since it may not actually be hyssop, it may not look like anything we recognize).
It's not very clear what the "tree" shape with the two big red blobs is in the top-left of the carved German pew.
It's not very clear what the "tree" shape with the two big red blobs is in the top-left of the carved German pew.