from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Arranged in exactly vertical ranks, as leaves on stems.
from the GNU version of the Collaborative International Dictionary of English
- adj. Arranged in exactly vertical ranks, as the leaves on stems of many kinds; -- opposed to curviserial.
from The Century Dictionary and Cyclopedia
- Disposed in a right line; rectilinear or straight, as a row or series of parts.
- In botany, disposed in one or more straight ranks: specifically used by Bravais, in contrast with curviserial (which see), to describe those forms of phyllotaxy in which a second leaf soon stands exactly over any given leaf, and thus all fall into right lines.
The leaves of this plant are naturally rectiserial and decussate, but, in the twisted stem the leaves were curviserial, and arranged according to the 5/13 plan.