sessile

adj. directly attached to the stem (Botany); permanently attached, fixed in place (Zoology)

Sessile is a term in biology with two distinct meanings: In botany In botany, sessile means "without a stalk", as in flowers (pedicel) or leaves (petiole) that grow directly from the stem or Peduncle; however, in limnology, sessile vegetation are any organisms anchored to the benthic environment.
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Adjective
1. permanently attached to a substrate; not free to move about; "an attached oyster"; "sessile marine animals and plants"
(synonym) attached
(antonym) vagile
(classification) biology, biological science
2. attached directly by the base; not having an intervening stalk; "sessile flowers"; "the shell of a sessile barnacle is attached directly to a substrate"
(synonym) stalkless
(antonym) pedunculate, stalked
(classification) biology, biological science

adj. (Botany) sessile, directly attached to the stem; permanently attached, fixed in place (Zoology)

adj. sessile, directly attached to the stem (Botany); permanently attached, fixed in place (Zoology)