Abstract
Meiotic and mitotic counts for all major taxa withinChelone show a euploid series: 2n = 28, 56, 84. A base number ofx = 14 is suggested. The distribution of numbers supports some previous taxonomic decisions. It raises questions about others, particularly those involving theC. glabra-C. obliqua complex. A root-tip technique involving digestion by “Pectinase” is described.
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Literature Cited
Cain, S. A. 1944. Foundations of Plant Geography. New York & London: Harper & Brothers. xiv + 556 pp.
Cooperrider, T. S. 1969. Notes onChelone in southeastern United States. Castanea34: 223–225.
— &J. H. Morrison 1967. Lactic-acetic-orcein as a chromosome stain. Michigan Botanist6: 176–178.
Crosswhite, F. S. 1965. Chromosome number ofChelone glabra (Scrophulariaceae). Sida2: 174.
Gleason, H. A. 1952. The New Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. Vol. III. New York: New York Bot. Garden, iii + 589 pp.
Pennell, F. W. 1935. The Scrophulariaceae of Eastern Temperate North America. Acad. Nat. Sci. Philadelphia Monograph 1. xiv + 650 pp.
Pienaar R., de V. 1955. Combinations and variations of techniques for improved chromosome studies in the Gramineae. Jour. South African Bot.21: 1–8.
Straw, R. M. 1966. A redefinition ofPenstemon (Scrophulariaceae). Brittonia18: 80–95.
Wherry, E. T. 1927-1928 (issued 1929). Chasing Chelones. Bartonia10: 1–11.
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Cooperrider, T.S., McCready, G.A. Chromosome numbers in chelone (Scrophulariaceae). Brittonia 22, 175–183 (1970). https://doi.org/10.2307/2805811
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DOI: https://doi.org/10.2307/2805811