endarch

/ˈɛndɑːrk/
adjective
  1. Relating to the development of xylem (plant tissue) from the center outward, with the oldest cells in the center.
    • In endarch stems, the protoxylem is located toward the center of the stem.
    • Botany students learned to identify endarch xylem in cross-sections of plant stems.
    • The endarch arrangement is typical of the stems of most seed plants.
Antonyms
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