Abstract
Verbesina exauriculata1 is an evil-scented but handsome herbaceous plant with broad orange rays, very abundant in the town of Las Vegas, New Mexico. My class in biology has been making a study of the variations in the number of rays in the heads of this plant, and in so doing we took occasion to compare two sets, from the eastern and western parts of the town respectively. The result was as follows, calling these sets A and B respectively:—
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References
Verbesina encelioides exauriculata, Robinson and Greenman, Proc. Amer. Acad., May, 1899, p. 544. Notwithstanding the name of this northern type, the petioles of the upper leaves are commonly strongly auriculate.
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COCKERELL, T. Material for Natural Selection. Nature 66, 607–608 (1902). https://doi.org/10.1038/066607d0
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DOI: https://doi.org/10.1038/066607d0
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