Leather leaf is an inexpensive fern that holds up well, is easily cut into different lengths and is used in every flower shop.
The grower's bunch is packed by weight - not by number of stems.
You can see the laterals are easily cut apart if you desire.
This versatile greenery fills in "holes" or open spaces in your design very quickly.
A top view of a typical (one brick) arrangement shows the leather leaf coming out from the sides and gradually moving the direction up and out - and eventually straight up in the center. This gives dimension to your design.