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The Ecological Life Cycle of Frasera caroliniensis, a Long-lived Monocarpic Perennial
Paul F. Threadgill, Jerry M. Baskin and Carol C. Baskin
The American Midland Naturalist
Vol. 105, No. 2 (Apr., 1981), pp. 277-289
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2424746
Page Count: 13
You can always find the topics here!Topics: Plants, Flowering, Censuses, Seedlings, Diameters, Juveniles, Dormancy, Phenology, Flowers, Perennials
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In the life cycle of Frasera caroliniensis Walt., seed germination, seedling establishment, bud dormancy break, rosette expansion and bolting occur before the canopy closes in early May. Flowering occurs from early May to mid-June, and seeds are mature by early to mid-August; most of the seeds are dispersed during late autumn and winter. Senescence of the flowering stalk and/or rosette occurs from mid-June to late August. Temperature and precipitation can cause variations in the timing of phenological events. Plants of F. caroliniensis are monocarpic, but they live for many years before flowering. Factors which stimulate flowering are unknown. Size alone does not appear to be the sole determinant of whether or not a plant will flower in a given year. Although plants must grow to a certain minimum size before they can flower, not all plants flower when they reach this minimum size. Thus, there is an overlap in sizes of flowering and nonflowering plants.
The American Midland Naturalist © 1981 The University of Notre Dame