Northern Prairie Wildlife Research Center
Titus and Stephens (1983) reported the following changes in proportional distribution of biomass within V. americana beds in Chenango Lake, New York: In late May, stems elongated from winter buds to produce small, leafy rosettes, at which time winter buds constituted the largest plant fraction by dry weight. Leaves dominated the plant biomass from mid-June through early August. Winter buds again rose to importance by late August just before the senescence of other plant parts. By mid-June, roots composed 13% of total plant biomass and continued to do so until the end of August. During the same period, stolons constituted 12-15% of total plant biomass. Flowers and fruits that developed in late summer usually did not exceed 0.6% of total plant biomass.
During the 1978 growing season in Chenango Lake, New York, V. americana winter buds accounted for 11% of total dry weight (Titus and Stephens 1983). Asexual reproduction was at least an order of magnitude greater than sexual reproduction in Chenango Lake.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/wildcel/phenol.htm
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