flowering glume
Học thuậtThân thiện
Definition
Noun: * Botanical Structure: In most grasses (family Gramineae/Poaceae), the flowering glume is the lower and typically stouter of the two bracts (glumes) that immediately enclose and protect an individual floret (a small flower) within a grass spikelet.
Usage
- The flowering glume is a key identifying feature when classifying grass species.
- Botanists examine the shape and venation of the flowering glume under a microscope.
Advanced Usage
- The term is used almost exclusively in technical botanical descriptions and taxonomic keys for grasses. It is synonymous with the term lemma.
Variants and Related Words
- Lemma (noun): The technical synonym for "flowering glume."
- Palea (noun): The upper, usually smaller bract that, paired with the lemma (flowering glume), encloses the grass floret.
- Glume (noun): A general term for a small, dry bract in the inflorescence of grasses, sedges, and similar plants. The flowering glume is a specific type of glume.
- Spikelet (noun): The basic unit of a grass inflorescence, consisting of one or more florets and often subtended by sterile glumes.
Synonyms
- Lemma
Antonyms
- There is no direct antonym, as it is a specific anatomical part. The contrasting paired structure is the palea.
Notes on Meaning
- This term has a single, highly specialized meaning in botany. It does not have everyday, figurative, or idiomatic uses.
Noun
- the lower and stouter of the two glumes immediately enclosing the floret in most Gramineae