On fertilization, the archegonia form obyriform calyptrae that are distinctly narrowed at base to form a stalk or peduncle; this does not occur in other Hepaticae.
The stalk that holds the inflorescence (the flower head) It starts at the base of the flowering stem and stops at the beginning of the flower head In Lavender it is what makes a long flower wand or a short one
a bundle of myelinated neurons joining different parts of the brain stalk bearing an inflorescence or solitary flower the thin process of tissue that attaches a polyp to the body