In botany, sessility is a characteristic of plant organs such as flowers or leaves that have no stalk. Plant parts can also be described as subsessile, that is, not completely sessile.
The perennial wildflower Trillium cernuum possesses three leaves that are sessile at the top of the stem.
The sporocarp of fungi is a multicellular structure on which spore-producing structures, such as basidia or asci, are borne. The fruitbody is part of the sexual phase of a fungal life cycle, while the
Sessility (botany)
…trilliums (Trillium subgen. Sessilia) and the pedicellate-flowered trilliums. The term "sessility" is also used in mycology to describe a fungal fruit body that is attached to or seated directly on the surface of the substrate, lacking a supporting stipe or pedicel…