Table 5. Leaf traits driving differences between FSL and FS treatments in this study.

Mechanism	Driving Factors	Effects
Overstorey sheltering	Leaf width, length, separation, branch ramification, clump diameter and clump separation, used to calculate Leaf Area Index1 in all plant strata above those burning.	Affects the angle of flames, potentially changing flame length by altering the depth of burning fuel (Fig 3D) or changing the amount of heat received by changing the length of the path to receiver plants (Fig 3E).
Donor flammability	All traits of donor plants	Affects the flame length by changing the flammability of the fuel burning (Fig 3B)
Receiver ignitability	Leaf thickness, moisture content, number of sides (affecting surface area), endotherm, percent dead in receiver plants2	Affects the capacity for receiver plants to ignite by changing their ignitability (Fig 3C).

¹ LAI used to calculate the vertical wind field as per [27,35]

² Ignitability consists of the endotherm and the IC, where leaf moisture is the mean of live and dead moisture contents weighted by the percent dead in the plant.