Related formsper·i·an·thi·al, adjective
Examples from the Web for perianth
Perianth funnel-form, the cylindrical tube equalling the somewhat spreading limb or shorter; segments 1-nerved.
Perianth neither gibbous nor with any trace of a spur or sac at the base.
The fruit is a small angular nut, usually enclosed in the perianth.The Sea Shore|William S. Furneaux
Perianth of 3–6 mostly retrorsely barbed or ciliate bristles (not elongated), or sometimes wanting.
We must therefore regard the flower of the grass as typically composed of one carpel and three stamens, with no perianth whatever.Grasses|H. Marshall Ward