Table IV. Effects of cell dimensions on the distribution of evaporation.

Values show the percentage of total evaporation that occurs from a tissue when various cell dimensions were varied from the minimum value to the maximum value observed across the 14 species listed in Table III while all other anatomical parameters were held at their all-species averages. The second column gives the range of values across species for each cell dimension, expressed as percentage of the all-species mean and as fold change (e.g. 4-fold range for palisade cell radius). Epidermis refers to the lower epidermis.

Dimension	Cross-Species Range of Dimension	Change of Percentage Evaporation between All-Species Minimum and Maximum Values of Dimension
		BS	Epidermis	Mesophyll
Palisade cell radius	49–195; 4.0	+0.7	+0.3	−1.4
Palisade cell height	63–158; 2.5	+0.6	−0.1	−0.8
Spongy cell radius	35–161; 4.6	+4.7	−5.9	−0.9
Epidermis cell size	53–235; 4.0	+0.04	−4.5	+3.8
BS cell size	51–144; 2.8	−0.7	−0.2	+1.9
BS extension cell size	41–173; 4.2	+4.3	−1.7	−0.5