| 释义 |
pentastichous, a. Bot.|pɛnˈtæstɪkəs|
[f. as prec. + -ous.]
Arranged in five rows, five-ranked; esp. of a stem: having five leaves in the spiral row, and thus five vertical rows or orthostichies in the phyllotaxis.
1857Mayne Expos. Lex., Pentastichus,..disposed in five rows,..pentastichous. 1861Bentley Man. Bot. 139 This arrangement of cycles of five..is termed the quincuncial, pentastichous or five-ranked arrangement. |