pyriform

The adhesive patch is made of parallel threads of a coil-shaped silk protein called pyriform silk; fibres made from this protein are highly elastic, like a rubber band.

The pyriform silk is coated with a sticky protein solution.

Seeds pyriform, with beak-like base.—Plants climbing by the coiling of naked-tipped tendrils.

Small species with a beakless, more or less round or pyriform perigynium, which is commonly glaucous; terminal spike androgynous or all staminate; stigmas mostly 2.—Sp.

Calyptra included, pyriform or oblong.