. The ecological relations of roots . A. pallida. B. Lygodesmia juncea, iniv^o seQiioris. C. Lespedeza capitata. WEAVER PLATE 12. A. ovatus; root of a thirteen-year-old plant; a is a continuation of a. B. Amorpha canescens; a is a continuation of a. WEAVER PLATE 13 \ \ H \ f 1 t i 1 A

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