black-calabash vs Ray's Knotgrass

Amphitecna latifolia compared with Polygonum oxyspermum

Key Differences

• black-calabash is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	black-calabash	Ray's Knotgrass
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Lamiales (Lamiales)	Caryophyllales (Caryophyllales)
Family	Bignoniaceae	Polygonaceae
Genus	Amphitecna	Polygonum
Species	Amphitecna latifolia	Polygonum oxyspermum

Evolutionary Relationship

black-calabash and Ray's Knotgrass share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

black-calabash

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	black-calabash	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

black-calabash

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Colombia and Cuba.

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

black-calabash

The Black-calabash (Amphitecna latifolia) is a species in the genus Amphitecna. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.