– Definition of Sessility in Botany:
– Sessility means plant organs like flowers or leaves lack a stalk.
– Subsessile plant parts are not entirely sessile.
– Sessile flowers lack a pedicel, while pedicellate flowers have one.
– Sessile leaves lack petioles, while petiolate leaves have them.
– Sessility in mycology refers to fungal fruit bodies attached directly to the substrate.
– Examples of Sessility in Botany:
– Trillium cernuum has sessile leaves at the top of the stem.
– The genus Trillium includes sessile-flowered and pedicellate-flowered species.
– Most monocotyledon leaves lack petioles.
– Sessile flowers and leaves have specific characteristics distinguishing them.
– Sessility can vary within plant species based on the presence of stalks.
– Sessility in Different Plant Parts:
– Sessile flowers lack flower stalks called pedicels.
– Sessile leaves lack leaf stalks known as petioles.
– Subsessile plant parts show partial attachment to the stem.
– The absence of stalks affects the mobility and structure of plant organs.
– Understanding sessility helps classify plant species based on their characteristics.
– Sessility Terminology in Botany and Mycology:
– Botanical glossaries define sessility in plant morphology.
– Mycology uses sessility to describe fungal fruit bodies without supporting structures.
– Different botanical and mycological references explain sessility in detail.
– Sessility terminology aids in precise communication within the scientific community.
– Sessility’s application extends to various disciplines beyond botany and mycology.
– References on Sessility in Botany:
– The Kew Plant Glossary and Cambridge Illustrated Glossary define plant terms.
– Illustrated Dictionary of Mycology explains mycological terms, including sessility.
– Reliable references provide in-depth knowledge on sessility in botany and mycology.
– Expanding knowledge through references enhances understanding of plant morphology.
– Accessing diverse sources helps clarify concepts related to sessility in botanical studies.
In botany, sessility (meaning "sitting", in the sense of "resting on the surface") 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.
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A sessile flower is one that lacks a pedicel (flower stalk). A flower that is not sessile is pedicellate. For example, the genus Trillium is partitioned into multiple subgenera, the sessile-flowered trilliums (Trillium subgen. Sessilia) and the pedicellate-flowered trilliums.
Sessile leaves lack petioles (leaf stalks). A leaf that is not sessile is petiolate. For example, the leaves of most monocotyledons lack petioles.[citation needed]
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.