. The ecological relations of roots . 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. A. Symphoricarpos vulgaris, showing fine network in surface soil. ^ B. Rhizomes and runners of SijmpJwricarpos vulgaris; the horizontal ground-line. WEAVER PLATE 14


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Keywords: ., bookcentury1900, bookdecade1910, bookidecologicalre, bookyear1919