RHACIS, or Rachis (Gr. ῥαχις, a backbone), in botany the axis of an inflorescence or of a branched leaf; in zoology, the stem of a feather, as opposed to the vesillum, or web.
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RHACIS, or Rachis (Gr. ῥαχις, a backbone), in botany the axis of an inflorescence or of a branched leaf; in zoology, the stem of a feather, as opposed to the vesillum, or web.