Dry Weight (Biomass) References
Polygonum pensylvanicum L. [Pennsylvania Smartweed]
Bazzaz, F.A. and Carlson, R.W. 1984. The response of plants to elevated CO2. I. Competition among and assemblage of annuals at two levels of soil moisture. Oecologia 62: 196-198.
Zangerl, A.R. and Bazzaz, F.A. 1984. The response of plants to elevated CO2. II. Competitive interactions among annual plants under varying light and nutrients. Oecologia 62: 412-417.