chlamydeous
Học thuậtThân thiện
Definition
Adjective: * In botany, describing a flower that possesses a floral envelope, also called a perianth. This perianth is the non-reproductive part of the flower and is composed of the calyx (sepals) and/or the corolla (petals). The term is used to contrast with flowers that lack such structures.
Usage
The term is a technical, scientific adjective used almost exclusively in botanical descriptions and classifications to specify the floral morphology. * It is typically used attributively before a noun like "flower." * Its opposite is achlamydeous.
Examples
- Botanists classify most common garden flowers as chlamydeous because they have both sepals and petals.
- The presence of a perianth makes a lily a chlamydeous flower.
- In the plant family Liliaceae, all members have chlamydeous flowers.
Advanced Usage
- The term can be further specified. A flower with both a distinct calyx and corolla is sometimes described as dichlamydeous (having two envelopes), while one with a single, undifferentiated perianth is monochlamydeous (having one envelope). However, both types fall under the broader category of chlamydeous.
Variants and Related Words
- Chlamys (noun): In botany, a rare term for a perianth segment or a small bract. In historical context, it refers to a short cloak worn in ancient Greece, which is the etymological root.
- Perianth (noun): The collective term for the floral envelope (calyx and corolla).
- Calyx (noun): The outermost whorl of the perianth, consisting of sepals.
- Corolla (noun): The whorl of the perianth inside the calyx, consisting of petals.
- Achlamydeous (adjective): The direct antonym, describing a flower lacking a perianth (e.g., flowers in the willow family, ).
Synonyms
- Perianth-bearing (descriptive phrase)
- Having a floral envelope (descriptive phrase)
Antonyms
- Achlamydeous (adjective): Lacking a floral envelope or perianth.
Adjective
- having a floral envelope or perianth consisting of a calyx and/or corolla