See Also: perianth(medicine)
perianth(dictionary)

perianth (iou)



perianth noun. . E18.
[French perianthe from mod. Latin perianthium, formed as PERI- + Greek anthos flower, after pericarpium PERICARP.]
Botany.
A calyx; (in plants of the composite family) the involucre. Only in 18.
The protective outer whorl(s) of a flower, esp. one in which corolla and calyx are not differentiated. E19.
The fused uppermost perichaetial bracts surrounding the calyptra of a liverwort. M19.
Comb.: perianth segment one of the distinct leaves forming a perianth, esp. when they are not differentiated into petals and sepals.