cycas
Học thuậtThân thiện
Definition
- Noun:
- A genus of plants: Cycas is the type genus of the family Cycadaceae, comprising a group of Old World, evergreen, tropical trees. These plants are characterized by pinnate (feather-like) leaves and a columnar trunk that is often covered with the persistent bases of old leaves.
Usage Examples
- Noun:
- The garden features a large Cycas specimen near the entrance.
- Fossil records show that Cycas has existed since the time of the dinosaurs.
- Botanists study the reproductive cycle of Cycas.
Advanced Usage
- In botanical classification: The genus name is always italicized in scientific writing. Species within this genus are referred to with a binomial name, e.g., (the Sago Palm).
- The most commonly cultivated species is Cycas revoluta.
Variants and Related Words
- Cycad (n): The common name for plants belonging to the order Cycadales, which includes the genus and other related genera.
- Cycads, including Cycas, are often mistaken for palms or ferns.
- Cycadaceae (n): The botanical family to which the genus belongs.
Synonyms
- Sago palm (common name for ): Note that this is a common name for a specific species, not a true synonym for the entire genus.
- Cycad: A broader term for plants in the order, often used interchangeably in non-scientific contexts.
Related Terms and Phrases
- Pinnate leaves: A phrase describing the leaf structure typical of .
- Columnar stem: A phrase describing the trunk shape characteristic of these plants.
Noun
- type genus of Cycadaceae: genus of widely distributed Old World evergreen tropical trees having pinnate leaves and columnar stems covered with persistent bases of old leaves