Table 2. Difference in leaf area between fresh and treated leaves of ten species and the respective percent decrease in area.

Species	Treatment	Difference in leaf area (cm2)		Decrease in area (%)
Acer saccharum	Pressed	−3.94±0.37	*	6.86±0.29
	Cold	0.03±0.06		−0.09±0.13
Asclepias syriaca	Pressed	−5.87±0.56	*	10.13±1.13
	Cold	−0.09±0.07		0.05±0.10
Avena sativa	Pressed	−4.43±0.38	*	20.68±1.08
	Cold	−0.82±0.17	*	3.58±0.73
Phragmites australis	Pressed	−7.07±0.93	*	24.76±1.17
	Cold	−0.31±0.20		0.87±0.73
Picea pungens	Pressed	−0.08±0.01	*	21.06±2.12
	Cold	−0.05±0.01	*	15.37±1.97
Pinus strobus	Pressed	−0.08±0.01	*	16.94±1.58
	Cold	−0.06±0.01	*	11.41±2.06
Polypodium virginianum	Pressed	−8.78±0.69	*	35.22±1.92
	Cold	0.03±0.15		−0.25±0.65
Pteridium aquilinum	Pressed	−5.07±0.50	*	13.94±0.59
	Cold	−0.35±0.10	*	0.98±0.26
Quercus rubra	Pressed	−4.82±0.42	*	7.18±0.25
	Cold	0.03±0.05		−0.14±0.15
Taraxacum officinale	Pressed	−4.74±0.29	*	25.99±0.79
	Cold	−0.92±0.18	*	4.11±0.77

Asterisks denote differences between fresh and treated leaf areas that were significantly different than zero (paired t-test, P≤0.05, n = 25).