Botany of the Southern states . eties are generally called, in distinc-tion from the other varieties, simple roots, the most of the rootbeing confined to the main axis, and sending off few small fibers. (7.) The Filiform Root consists of a single filament, and is theroot of some floating plants, as the Lemna. (8.) Didymous Roots are those whichproduce a tubercle each year, and whenthe tubercle of one year arrives atnearly the dimensions of the one of thepreceding year, they answer to the formindicated by the term applied to them ;that is, double or twin roots. The Orchisaffords examples of thi
Botany of the Southern states . eties are generally called, in distinc-tion from the other varieties, simple roots, the most of the rootbeing confined to the main axis, and sending off few small fibers. (7.) The Filiform Root consists of a single filament, and is theroot of some floating plants, as the Lemna. (8.) Didymous Roots are those whichproduce a tubercle each year, and whenthe tubercle of one year arrives atnearly the dimensions of the one of thepreceding year, they answer to the formindicated by the term applied to them ;that is, double or twin roots. The Orchisaffords examples of this variety, Fig. 34. (9.) The Palmated Roots are such asdiffer from the preceding only in hav-ing the lobes divided, giving them somewhat the appearance ofa hand. The Orchis affords examples of this variety. 68. The following varieties are generally classed as eitherstems or buds, but are, in common parlance, called roots, andwe know of no disadvantage in complying with the populararrangement by describing them under this Didymous roots. What is a fusiform root? What a napiform? A filiform? Didymous!Palmated ?—68. How are the remaining varieties classed ? 38 THE ROOT.
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